As a workaround for https://gitlab.com/gitlab-org/gitlab-ce/issues/64116

Also memoize has_metrics? as well, that might be expensive, and it
should not change for the lifetime of EnvironmentStatus

In 12.2 we will remove this fallback.

We stopped calling the fallback so we can remove this now

Split into followup issue

We can now share project so that we don't have to load project twice.
Also, this extracts non-relevant logic out of Deployment.

Update DeploymentsController accordingly

Otherwise, each EnvironmentStatus object instantiates its own project
when really they are the same. Improves query count performance

This improves query performance of
MergeRequestsController#ci_environments_status a lot.

However this means old deployments that deployed to kubernetes clusters
with prometheus installations will no longer show performance metrics as
we cannot backfill cluster_id from deployment_platform with certainty
(clusters may be edited/added/deleted, which changes the results of
deployment_platform).

We have an N+1 problem where N is environments.

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

Remove applySuggestion from notes service

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

This reverts merge request !30130

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

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

Fix failing e2e tests - initialize Issue labels

See merge request gitlab-org/gitlab-ce!30375

Fix top position of sticky file header on discussion tab

Closes #63976

See merge request gitlab-org/gitlab-ce!30410

Edit new text on visibility setting

See merge request gitlab-org/gitlab-ce!30281

Documentation: Update installation from source document

See merge request gitlab-org/gitlab-ce!30380

Line 170(make install) causes permission error.
This command should execute with sudo.

Remove unresolved class and fixed height in discussion header

See merge request gitlab-org/gitlab-ce!28440

Docs: Change even more absolute links to relative

See merge request gitlab-org/gitlab-ce!30387

Change assorted absolute links to ce and ee docs
to relative links

Removes EE differences for app/views/layouts/fullscreen.html.haml

Closes gitlab-ee#12550

See merge request gitlab-org/gitlab-ce!30403

Adding order by to list runner jobs api.

Closes #51794

See merge request gitlab-org/gitlab-ce!29629