Add /-/health basic health check endpoint

See merge request gitlab-org/gitlab-ce!20456

Fix /admin/jobs failing to load due to statement timeout

Closes #49767

See merge request gitlab-org/gitlab-ce!20909

Resolve "Improve Error Message When Adding Invalid User to Project via API"

Closes #32821

See merge request gitlab-org/gitlab-ce!20885

Make rbtrace work under unicorn

See merge request gitlab-org/gitlab-ce!20892

The `ORDER BY created_at DESC` clause causes a sequential scan because
there is no index on the `created_at` column. We can sort by `id`
or by `updated_at` to make things fast.

Closes #49767

Create GPG commit signature in bulk

See merge request gitlab-org/gitlab-ce!20870

Fix link to Cycle Analytics in help

Closes #49729

See merge request gitlab-org/gitlab-ce!20895

Permit concurrent loads in gpg keychain mutex

See merge request gitlab-org/gitlab-ce!20894

Update GitLab Workhorse to v5.1.0

See merge request gitlab-org/gitlab-ce!20900

Bump prometheus-client-mmap to 0.9.4

See merge request gitlab-org/gitlab-ce!20891

The Unicorn master resets any signal handlers and prevents rbtrace
from working properly as a result. Move the `require 'rbtrace'` call
to the Unicorn `after_fork` block and keep the initializer only for Sidekiq.

Resolve "Mutual SSL Auth For Helm TIller"

Closes #48098

See merge request gitlab-org/gitlab-ce!20801

Resolve "Sorting by name on milestones page renders a 500 error"

Closes #49701

See merge request gitlab-org/gitlab-ce!20881

We should sort by title because name is only an alias for
the title attribute on the milestone model.

[Backport] View summed weights of issues in board column

See merge request gitlab-org/gitlab-ce!20860

Resolve "Copy diff file path as GFM" is broken

Closes #48823

See merge request gitlab-org/gitlab-ce!20725

Backport of EE-1499

See merge request gitlab-org/gitlab-ce!20879

Require has_internal_id to pass a init block.

Closes #49609

See merge request gitlab-org/gitlab-ce!20873

This was not happening very often but with the previous changes to
create SSL certs for helm tiller it takes long enough to be created that
we see the test failing a lot more

Extend gitlab-ci.yml to request junit.xml test reports

See merge request gitlab-org/gitlab-ce!20390