Replace CLA

CONTRIBUTING.md

-## Contributor license agreement
+## Developer Certificate of Origin + License
+
+By contributing to GitLab B.V., You accept and agree to the following terms and
+conditions for Your present and future Contributions submitted to GitLab B.V. 
+Except for the license granted herein to GitLab B.V. and recipients of software 
+distributed by GitLab B.V., You reserve all right, title, and interest in and to 
+Your Contributions.
+
+Developer Certificate of Origin
+Version 1.1
+
+Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
+1 Letterman Drive
+Suite D4700
+San Francisco, CA, 94129
+
+Everyone is permitted to copy and distribute verbatim copies of this license 
+document, but changing it is not allowed.
+
+Developer's Certificate of Origin 1.1
+
+By making a contribution to this project, I certify that:
+
+(a) The contribution was created in whole or in part by me and I have the right 
+to submit it under the open source license indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the best of my 
+knowledge, is covered under an appropriate open source license and I have the 
+right under that license to submit that work with modifications, whether created 
+in whole or in part by me, under the same open source license (unless I am 
+permitted to submit under a different license), as indicated in the file; or
+
+(c) The contribution was provided directly to me by some other  person who 
+certified (a), (b) or (c) and I have not modified it.
+
+(d) I understand and agree that this project and the contribution are public and 
+that a record of the contribution (including all personal information I submit 
+with it, including my sign-off) is maintained indefinitely and may be 
+redistributed consistent with this project or the open source license(s) 
+involved.
+
+All Contributions to this project are licensed under the following licenses:
+
+## MIT
+
+Copyright <YEAR> <COPYRIGHT HOLDER>
+Permission is hereby granted, free of charge, to any person obtaining a copy of 
+this software and associated documentation files (the "Software"), to deal in 
+the Software without restriction, including without limitation the rights to 
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of 
+the Software, and to permit persons to whom the Software is furnished to do so, 
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all 
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS 
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR 
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+## Apache License 2.0
+
+Apache License
+Version 2.0, January 2004
+http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+"License" shall mean the terms and conditions for use, reproduction, and 
+distribution as defined by Sections 1 through 9 of this document.
+
+"Licensor" shall mean the copyright owner or entity authorized by the copyright 
+owner that is granting the License.
+
+"Legal Entity" shall mean the union of the acting entity and all other entities 
+that control, are controlled by, or are under common control with that entity. 
+For the purposes of this definition, "control" means (i) the power, direct or 
+indirect, to cause the direction or management of such entity, whether by 
+contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the 
+outstanding shares, or (iii) beneficial ownership of such entity.
+
+"You" (or "Your") shall mean an individual or Legal Entity exercising 
+permissions granted by this License.
+
+"Source" form shall mean the preferred form for making modifications, including 
+but not limited source, and configuration files.
+
+"Object" form shall mean any form resulting from mechanical transformation or 
+ translation of a Source form, including but not limited to compiled object 
+ code, generated documentation, and conversions to other media types.
+
+"Work" shall mean the work of authorship, whether in Source or Object form, made 
+available under the License, as indicated by a copyright notice that is included 
+in or attached to the work (an example is provided in the Appendix below).
+
+"Derivative Works" shall mean any work, whether in Source or Object form, that 
+is based on (or derived from) the Work and for which the editorial revisions, 
+annotations, elaborations, or other modifications represent, as a whole, an 
+original work of authorship. For the purposes of this License, Derivative Works 
+shall not include works that remain separable from, or merely link (or bind by 
+name) to the interfaces of, the Work and Derivative Works thereof.
+
+"Contribution" shall mean any work of authorship, including the original version 
+of the Work and any modifications or additions to that Work or Derivative Works 
+thereof, that is intentionally submitted to Licensor for inclusion in the Work 
+by the copyright owner or by an individual or Legal Entity authorized to submit 
+on behalf of the copyright owner. For the purposes of this definition, 
+"submitted" means any form of electronic, verbal, or written communication sent 
+to the Licensor or its representatives, including but not limited to 
+communication on electronic mailing lists, source code control systems, and 
+issue tracking systems that are managed by, or on behalf of, the Licensor for 
+the purpose of discussing and improving the Work, but excluding communication 
+that is conspicuously marked or otherwise designated in writing by the copyright 
+owner as "Not a Contribution."
+
+"Contributor" shall mean Licensor and any individual or Legal Entity on behalf 
+of whom a Contribution has been received by Licensor and subsequently 
+incorporated within the Work.
+
+2. Grant of Copyright License. Subject to the terms and conditions of this 
+License, each Contributor hereby grants to You a perpetual, worldwide, 
+non-exclusive, no-charge, royalty-free, irrevocable copyright license to 
+reproduce, prepare Derivative Works of, publicly display, publicly perform, 
+sublicense, and distribute the Work and such Derivative Works in Source or 
+Object form.
+
+3. Grant of Patent License. Subject to the terms and conditions of this License, 
+each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, 
+no-charge, royalty-free, irrevocable  (except as stated in this section) 
+patent license to make, have made, use, offer to sell, sell, import, and 
+otherwise transfer the Work, where such license applies only to those patent 
+claims licensable by such Contributor that are necessarily infringed by their 
+Contribution(s) alone or by combination of their Contribution(s) with the 
+Work to which such Contribution(s) was submitted. If You institute patent 
+litigation against any entity (including a cross-claim or counterclaim in a 
+lawsuit) alleging that the Work or a Contribution incorporated within the 
+Work constitutes direct or contributory patent infringement, then any patent 
+licenses granted to You under this License for that Work shall terminate as of 
+the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the Work or 
+Derivative Works thereof in any medium, with or without modifications, and in 
+Source or Object form, provided that You meet the following conditions:
+
+(a) You must give any other recipients of the Work or Derivative Works a copy of 
+this License; and
+
+(b) You must cause any modified files to carry prominent notices stating that 
+You changed the files; and
+
+(c) You must retain, in the Source form of any Derivative Works that You 
+distribute, all copyright, patent, trademark, and attribution notices from the 
+Source form of the Work, excluding those notices that do not pertain to any part 
+of the Derivative Works; and
+
+(d) If the Work includes a "NOTICE" text file as part of its distribution, then 
+any Derivative Works that You distribute must include a readable copy of the 
+attribution notices contained within such   NOTICE file, excluding those notices 
+that do not pertain to any part of the Derivative Works, in at least one of the 
+following places: within a NOTICE text file distributed as part of the 
+Derivative Works; within the Source form or documentation, if provided along 
+with the Derivative Works; or, wherever such third-party notices normally 
+appear. The contents of the NOTICE file are for informational purposes only and 
+do not modify the License. You may add Your own attribution notices within 
+Derivative Works that You distribute, alongside or as an addendum to the NOTICE 
+text from the Work, provided that such additional attribution notices cannot be 
+construed as modifying the License.
+
+You may add Your own copyright statement to Your modifications and may provide 
+additional or different license terms and conditions for use, reproduction, or 
+distribution of Your modifications, or for any such Derivative Works as a whole, 
+provided Your use, reproduction, and distribution of the Work otherwise complies 
+with the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise, any 
+Contribution intentionally submitted for inclusion in the Work by You to the 
+Licensor shall be under the terms and conditions of this License, without any 
+additional terms or conditions.
+      
+Notwithstanding the above, nothing herein shall supersede or modify the terms of 
+any separate license agreement you may have executed with Licensor regarding 
+such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade names, 
+trademarks, service marks, or product names of the Licensor, except as 
+required for reasonable and customary use in describing the origin of the 
+Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or agreed to in 
+writing, Licensor provides the Work (and each Contributor provides its 
+Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 
+KIND, either express or implied, including, without limitation, any warranties 
+or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A 
+PARTICULAR PURPOSE. You are solely responsible for determining the 
+appropriateness of using or redistributing the Work and assume any risks 
+associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory, whether in 
+tort (including negligence), contract, or otherwise, unless required by 
+applicable law (such as deliberate and grossly negligent acts) or agreed to in 
+writing, shall any Contributor be liable to You for damages, including any 
+direct, indirect, special, incidental, or consequential damages of any character 
+arising as a result of this License or out of the use or inability to use the 
+Work (including but not limited to damages for loss of goodwill, work stoppage, 
+computer failure or malfunction, or any and all other commercial damages or 
+losses), even if such Contributor has been advised of the possibility of such 
+damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing the Work or 
+Derivative Works thereof, You may choose to offer, and charge a fee for, 
+acceptance of support, warranty, indemnity, or other liability obligations 
+and/or rights consistent with this License. However, in accepting such 
+obligations, You may act only on Your own behalf and on Your sole 
+responsibility, not on behalf of any other Contributor, and only if You 
+agree to indemnify, defend, and hold each Contributor harmless for any 
+liability incurred by, or claims asserted against, such Contributor by 
+reason of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+To apply the Apache License to your work, attach the following boilerplate 
+notice, with the fields enclosed by brackets "[]" replaced with your own 
+identifying information. (Don't include the brackets!)  The text should be 
+enclosed in the appropriate comment syntax for the file format. We also 
+recommend that a file or class name and description of purpose be included on 
+the same "printed page" as the copyright notice for easier identification within 
+third-party archives.
+
+Copyright [yyyy] [name of copyright owner]
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use 
+this file except in compliance with the License. You may obtain a copy of the 
+License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed 
+under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR 
+CONDITIONS OF ANY KIND, either express or implied. See the License for the 
+specific language governing permissions and limitations under the License.
 
-By submitting code as an individual you agree to the
-[individual contributor license agreement](doc/legal/individual_contributor_license_agreement.md).
-By submitting code as an entity you agree to the
-[corporate contributor license agreement](doc/legal/corporate_contributor_license_agreement.md).
 
 _This notice should stay as the first item in the CONTRIBUTING.md file._