Merge branch 'gitlab-shell-3-3-3' into 'master'

Update gitlab-shell to v3.3.3

Finishing touch for https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5542

![](https://gitlab.com/gitlab-org/gitlab-shell/uploads/bd0d4864f7bd864d38bfb6798fdd4ea3/image.png)

See merge request !5780

GITLAB_SHELL_VERSION

-3.2.1
+3.3.3

doc/update/8.10-to-8.11.md

@@ -46,7 +46,7 @@ sudo -u git -H git checkout 8-11-stable-ee
 ```bash
 cd /home/git/gitlab-shell
 sudo -u git -H git fetch --all --tags
-sudo -u git -H git checkout v3.2.1
+sudo -u git -H git checkout v3.3.3
 ```
 
 ### 5. Update gitlab-workhorse