[Call for testers] GitLab

[Torsten Zuehlsdorff]

Hello,

> today i updated the patch to bring GitLab to its newest version. Also
> i've added an update guide. If the feedback is still as positive as now
> i will write the outstanding PRs for the dependencies next week, so the
> committers can take care of the port.

It is finally done. All PRs are written and there is a working shar for 
GitLab:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=202468

Greetings,
Torsten