Merge branch 'gitlab_git-10.1.4' into 'master'

Use gitlab_git 10.1.4

Towards https://gitlab.com/gitlab-org/gitlab-ce/issues/18690,
following https://gitlab.com/gitlab-org/gitlab_git/merge_requests/87 .

See merge request !4706

Gemfile.lock

@@ -277,7 +277,7 @@ GEM
       posix-spawn (~> 0.3)
     gitlab_emoji (0.3.1)
       gemojione (~> 2.2, >= 2.2.1)
-    gitlab_git (10.1.3)
+    gitlab_git (10.1.4)
       activesupport (~> 4.0)
       charlock_holmes (~> 0.7.3)
       github-linguist (~> 4.7.0)