Update gitlab-org/gitlab-exporter from 6.0.0 to 6.1.0

See merge request gitlab-org/build/CNG!388

Grab a newer openssh version from centos8 repos

Closes gitlab-org/distribution/team-tasks#573

See merge request gitlab-org/build/CNG!389

And include them in our assets

Bump Container Registry to v2.8.1-gitlab

See merge request gitlab-org/build/CNG!386

Fix Container Registry Dockerfiles

Closes gitlab-org/charts/gitlab#1894

See merge request gitlab-org/build/CNG!385

Fix gitlab-rails-* jobs gems chacing

Closes gitlab-org/gitlab#205202

See merge request gitlab-org/build/CNG!384

Signed-off-by: Rémy Coutable <remy@rymai.me>

Use custom formatter for Unicorn logs

See merge request gitlab-org/build/CNG!380

Bump Container Registry to v2.8.0-gitlab

See merge request gitlab-org/build/CNG!382

Update the redis gem used by mailroom

See merge request gitlab-org/build/CNG!379

Bump Container Registry to v2.7.8-gitlab

See merge request gitlab-org/build/CNG!381

Remove ssh-keysign from ubi8 images

See merge request gitlab-org/build/CNG!378

Match the version used in upstream gitlab

Also add a dependencies check for the gem to help us stay up-to-date

This is installed with openssh-clients, but used for host-auth, which we
won't use, and these binaries are often flagged by security software.

Update gitlab-org/gitlab-exporter from 5.2.2 to 6.0.0

See merge request gitlab-org/build/CNG!375

Adding symbolic links to suppress gitlab-shell version WARN

See merge request gitlab-org/build/CNG!373

Grab the the autosigner key for kernel shasums

See merge request gitlab-org/build/CNG!369

Trim the '-ee' from ubi8 tags.

See merge request gitlab-org/build/CNG!372

Bump postgres version to 10.11, resolves CVE-2019-10208

See merge request gitlab-org/build/CNG!371

Only push kubectl releases for stable

Closes gitlab-org/charts/gitlab#1500

See merge request gitlab-org/build/CNG!370

We trim these for the non-ubi8 images, but needed to update the trim to
work on the ubi8 images as well.

Currently the images look like: 'v12.6.5-ee-ubi8' and this will tag them
as 'v12.6.5-ubi8'

Don't push the versioned name for feature branches, instead only do so
for tags, master, and stable branches

To fix ubi8 breakages

Remove redis-ha image

See merge request gitlab-org/build/CNG!368

Migrate python version to artifacts

See merge request gitlab-org/build/CNG!367

Migrate git version checks to artifacts

See merge request gitlab-org/build/CNG!366