Track compatible gitlab-git-http-server version

GITLAB_GIT_HTTP_SERVER_VERSION

@@ -0,0 +1 @@
+0.2.14

doc/install/installation.md

@@ -325,6 +325,7 @@ GitLab Shell is an SSH access and repository management software developed speci
     cd /home/git
     sudo -u git -H git clone https://gitlab.com/gitlab-org/gitlab-git-http-server.git
     cd gitlab-git-http-server
+    sudo -u git -H git checkout 0.2.14
     sudo -u git -H make
 
 ### Initialize Database and Activate Advanced Features

doc/update/7.14-to-8.0.md

@@ -84,6 +84,7 @@ Now we download `gitlab-git-http-server` and install it in `/home/git/gitlab-git
 cd /home/git
 sudo -u git -H git clone https://gitlab.com/gitlab-org/gitlab-git-http-server.git
 cd gitlab-git-http-server
+sudo -u git -H git checkout 0.2.14
 sudo -u git -H make
 ```