Resolve "Race condition in fetching Kubernetes token causes missing `$KUBECONFIG`"

Closes #63507

See merge request gitlab-org/gitlab-ce!29922

Enabled complex ci variable expression statements by default

See merge request gitlab-org/gitlab-ce!29904

Split quarantined test that does too much into smaller and more isolated test cases

Closes gitlab-org/quality/staging#19

See merge request gitlab-org/gitlab-ee!14259

Do not rewrite relative links for system notes

Closes #63162

See merge request gitlab-org/gitlab-ce!29825

Use correct CE project name for org repo

Closes gitlab-ce#63525

See merge request gitlab-org/gitlab-ee!14310

Since Kubernetes is creating the Secret and token asynchronously it is
necessary that we implement some delay or retrying logic to avoid a race
condition where we fetch a Secret before the token is even set. There
does not appear to be any way for us to force it to be set with any
synchronous API call so retrying seems to be the only option.

Remove Kubernetes service from deployment platform

See merge request gitlab-org/gitlab-ce!29786

Merge branch '12326-broken-master-due-to-removal-of-project-level-cluster-credentials-passthrough' into 'master'

Fix specs relying on unmanaged cluster behaviour

Closes #12326

See merge request gitlab-org/gitlab-ee!14315

Docs: Change wording

See merge request gitlab-org/gitlab-ce!29746

EE - Remove kubernetes service deployment platform

See merge request gitlab-org/gitlab-ee!14313

Caused by depending on functionality removed in
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/29262

Remove fallback to platform credentials for managed project-level clusters

Closes #62772

See merge request gitlab-org/gitlab-ce!29262

Project-level clusters that made use of this legacy
behaviour have been migrated to unmanaged clusters,
so we are now free to remove this fallback.

This will no longer be used for deployments, as all
service templates have been migrated to clusters.

This will no longer be used for deployments, as all
service templates have been migrated to clusters.

Migrate managed clusters that aren't using managed features to unmanaged

Closes #62772

See merge request gitlab-org/gitlab-ce!29251

Migrate clusters with no token to unmanaged

Closes #62772

See merge request gitlab-org/gitlab-ce!29648

Omit issues links in merge request entity API response

Closes #63546

See merge request gitlab-org/gitlab-ce!29917

Add missing EE prepend for clusterable actions

Closes gitlab-ce#63366

See merge request gitlab-org/gitlab-ee!14270

using_docker_images.md: fix config.json path

See merge request gitlab-org/gitlab-ce!29791

Geo - Remove legacy queries from Geo::JobArtifactRegistryFinder

See merge request gitlab-org/gitlab-ee!14289

The merge request widget has a section that includes which issues may be
closed or mentioned based on the merge request description. The problem
is that rendering and redacting Markdown can be expensive, especially
since the browser polls for the data every 10 seconds.

Since these links don't change much and are just nice to have, we only
load them on first page load. The frontend will use the existing data if
the data doesn't appear on subsequent requests.

This saves about 30% of the rendering time of this endpoint, which adds
up to significant savings considering that
`MergeRequestsController#show.json` is called over a million times a day
on GitLab.com.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/63546

Make deploy_boards doc clearer about its requirements

See merge request gitlab-org/gitlab-ce!29682

There are clusters that have Kubernetes namespaces
stored which are missing a service account token.
These namespaces are unable to be used for deployments,
so marking the clusters as unmanaged will allow the
platform credentials to be used instead.