EE: Clusters hierarchy CTE

See merge request gitlab-org/gitlab-ee!14480

- This enables us to use a scope to query all clusters in group
hierarchy order in one query, and also enables us to union to instance
clusters later.

- Handle case where clusters not present at level. In which case the
query should go ahead and return the next level's clusters.

- Swap with new CTE query behind Feature flag. This FF is default
disabled.

ADD '.git' ending to git clone with CI_JOB_TOKEN for clarity

See merge request gitlab-org/gitlab-ce!30200

Docs: Update redirected links in docs (part 1)

Closes #64225

See merge request gitlab-org/gitlab-ce!30379

First MR in a series updating all redirected links
in CE documentation to the destination URLs

Refactor end-to-end test

See merge request gitlab-org/gitlab-ce!30421

Merge branch 'da-add-note-that-internal-url-work-with-load-balancer-that-terminates-tls-docs' into 'master'

Geo - Add note that Internal URL works only with a Load Balancer with TLS termination

See merge request gitlab-org/gitlab-ce!30372

Update dangerfile to exclude docs ci yaml

See merge request gitlab-org/gitlab-ce!30335

Prevent amplification of ReactiveCachingWorker jobs upon failures

Closes #64176

See merge request gitlab-org/gitlab-ce!30432

Upgrade Rouge to 3.5.1

See merge request gitlab-org/gitlab-ce!30431

Revert "Increase rspec parallelism"

See merge request gitlab-org/gitlab-ce!30429

This release includes continued improvements to the library, fixes for a
number of lexers and support for three new languages:
https://github.com/rouge-ruby/rouge/releases

When `ReactiveCachingWorker` hits an SSL or other exception that occurs
quickly and reliably, automatically rescheduling a new worker could lead
to excessive number of jobs being scheduled. This happens because not
only does the failed job get rescheduled in a minute, but each Sidekiq
retry will also add even more rescheduled jobs.

In busy instances, this can become an issue because large numbers of
`ReactiveCachingWorker` running can cause high rates of `ExclusiveLease`
reads to occur and possibly saturate the Redis server with queries.

We now disable this automatic retry and rely on Sidekiq to perform its 3
retries with a backoff period.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/64176

Geo: refactor some specs

See merge request gitlab-org/gitlab-ee!14518

The way Shared Examples were being used (in reverse) were
causing issues and forcing multiple `let` blocks to be replicated
at each context.

Remove applySuggestion from notes service

See merge request gitlab-org/gitlab-ce!30399

This reverts merge request !30130

Merge branch '12649-spec-failure-in-ee-spec-services-ci_minutes_usage_notify_service_spec-rb' into 'master'

Fix spec failure in ee/spec/services/ci_minutes_usage_notify_service_spec.rb"

Closes #12649

See merge request gitlab-org/gitlab-ee!14578

The order here doesn't matter and causes failures in CI

Fix invalid SSL certificate errors on Drone CI service

See merge request gitlab-org/gitlab-ce!30422

Some services can raise OpenSSL::X509::CertificateError due
to an invalid SSL certificates, with OpenSSL::OpenSSLError
we can handle these errors.

Add queue_size method to ApplicationWorker

See merge request gitlab-org/gitlab-ce!30416

Increase rate at which UpdateAllMirrorsWorker schedules jobs and reschedules itself

Closes #11874

See merge request gitlab-org/gitlab-ee!14573

Edit text, using correct terms

See merge request gitlab-org/gitlab-ce!30382

Added experimental languages to license management docs.

See merge request gitlab-org/gitlab-ce!29932