Use OpenShift in docs and Web UI instead of Openshift

Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

app/models/project_services/kubernetes_service.rb

@@ -53,7 +53,7 @@ class KubernetesService < DeploymentService
   end
 
   def description
-    'Kubernetes / Openshift integration'
+    'Kubernetes / OpenShift integration'
   end
 
   def help

doc/api/services.md

@@ -573,7 +573,7 @@ DELETE /projects/:id/services/jira
 
 ## Kubernetes
 
-Kubernetes / Openshift integration
+Kubernetes / OpenShift integration
 
 CAUTION: **Warning:**
 Kubernetes service integration has been deprecated in GitLab 10.3. API service endpoints will continue to work as long as the Kubernetes service is active, however if the service is inactive API endpoints will automatically return a `400 Bad Request`. Read [GitLab 10.3 release post](https://about.gitlab.com/2017/12/22/gitlab-10-3-released/#kubernetes-integration-service) for more information.

doc/install/openshift_and_gitlab/index.md

@@ -18,7 +18,7 @@ In this tutorial, we will see how to deploy GitLab in OpenShift using GitLab's
 official Docker image while getting familiar with the web interface and CLI
 tools that will help us achieve our goal.
 
-For a video demonstration on installing GitLab on Openshift, check the article [In 13 minutes from Kubernetes to a complete application development tool](https://about.gitlab.com/2016/11/14/idea-to-production/).
+For a video demonstration on installing GitLab on OpenShift, check the article [In 13 minutes from Kubernetes to a complete application development tool](https://about.gitlab.com/2016/11/14/idea-to-production/).
 
 ---
 
@@ -518,7 +518,7 @@ PaaS and managing your applications with the ease of containers.
 [templates]: https://docs.openshift.org/latest/architecture/core_concepts/templates.html "Documentation - OpenShift templates"
 [old-post]: https://blog.openshift.com/deploy-gitlab-openshift/ "Old post - Deploy GitLab on OpenShift"
 [line]: https://gitlab.com/gitlab-org/omnibus-gitlab/blob/658c065c8d022ce858dd63eaeeadb0b2ddc8deea/docker/openshift-template.json#L239 "GitLab - OpenShift template"
-[oc-gh]: https://github.com/openshift/origin/releases/tag/v1.3.0 "Openshift 1.3.0 release on GitHub"
+[oc-gh]: https://github.com/openshift/origin/releases/tag/v1.3.0 "OpenShift Origin 1.3.0 release on GitHub"
 [ha]: ../../administration/high_availability/gitlab.html "Documentation - GitLab High Availability"
 [replicas]: https://docs.openshift.org/latest/architecture/core_concepts/deployments.html#replication-controllers "Documentation - Replication controller"
 [autoscaling]: https://docs.openshift.org/latest/dev_guide/pod_autoscaling.html "Documentation - Autoscale"

doc/topics/authentication/index.md

@@ -45,4 +45,4 @@ This page gathers all the resources for the topic **Authentication** within GitL
 - [Kanboard Plugin GitLab Authentication](https://github.com/kanboard/plugin-gitlab-auth)
 - [Jenkins GitLab OAuth Plugin](https://wiki.jenkins.io/display/JENKINS/GitLab+OAuth+Plugin)
 - [How to customize GitLab to support OpenID authentication](http://eric.van-der-vlist.com/blog/2013/11/23/how-to-customize-gitlab-to-support-openid-authentication/)
-- [Openshift - Configuring Authentication and User Agent](https://docs.openshift.org/latest/install_config/configuring_authentication.html#GitLab)
+- [OKD - Configuring Authentication and User Agent](https://docs.okd.io/latest/install_config/configuring_authentication.html#GitLab)