Update GitLab Pages to 0.2.1

CHANGELOG-EE

 Please view this file on the master branch, on stable branches it's out of date.
 
 v 8.7.0 (unreleased)
+  - Update GitLab Pages to 0.2.1: support user-defined 404 pages
 
 v 8.6.2
   - Fix old commits triggering git hooks on new branches branched off another branch. !281

GITLAB_PAGES_VERSION

-0.2.0
+0.2.1

doc/pages/administration.md

@@ -97,7 +97,7 @@ installing the pages daemon.
 cd /home/git
 sudo -u git -H git clone https://gitlab.com/gitlab-org/gitlab-pages.git
 cd gitlab-pages
-sudo -u git -H git checkout v0.2.0
+sudo -u git -H git checkout v0.2.1
 sudo -u git -H make
 ```
 
@@ -505,7 +505,7 @@ latest previous version.
 - Documentation was moved to one place
 
 [8-5-docs]: https://gitlab.com/gitlab-org/gitlab-ee/blob/8-5-stable-ee/doc/pages/administration.md
-[gitlab-pages]: https://gitlab.com/gitlab-org/gitlab-pages/tree/v0.2.0
+[gitlab-pages]: https://gitlab.com/gitlab-org/gitlab-pages/tree/v0.2.1
 [NGINX configs]: https://gitlab.com/gitlab-org/gitlab-ee/tree/8-5-stable-ee/lib/support/nginx
 
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