This adds new metrics for monitoring unicorn. These metrics include
process_cpu_seconds_total, process_start_time_seconds, process_max_fds,
and unicorn_workers.

Fix remove_source_branch merge request API handling

Closes #60530

See merge request gitlab-org/gitlab-ce!27392

Users attempting to set merge requests to `remove_source_branch` to
`false` would encounter an Error 500 because the UpdateService and API
checked `present?`, which would always return `false`. We now just
use `has_key?` to decide whether the parameter is present.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/60530

Fix URL that causes test_external_links to fail

See merge request gitlab-org/gitlab-ce!27384

https://gitlab.com/gitlab-com/gitlab-docs/-/jobs/196921364

Properly expire all pipeline caches when pipeline is deleted

Closes #60469

See merge request gitlab-org/gitlab-ce!27334

Forbid the usage of reload

Closes #60218

See merge request gitlab-org/gitlab-ce!27125

Remove multi-line suggestions feature flag

Closes #59178

See merge request gitlab-org/gitlab-ce!27219

Git FSCK has no timeout

Closes #53319

See merge request gitlab-org/gitlab-ce!27299

Add variable substitution in prometheus proxy API

See merge request gitlab-org/gitlab-ce!27226

- In prometheus proxy api, allow variables to be replaced. For example,
if 'up{env="%{ci_environment_slug}"}' is passed to the endpoint, it
becomes 'up{env="production"}' before being sent to prometheus.

When deleting a pipeline, only some of the cache structures were being
expired, but not the full pipeline list. We have to synchronously
schedule a pipeline cache expiration because the pipeline will be
deleted if the Sidekiq expiration job picks it up. To do this, properly
extract all the logic buried in the Sidekiq worker into a service, and
then call the service.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/60469

Split `.gitlab-ci.yml` into multiple includes

Closes #58521

See merge request gitlab-org/gitlab-ce!27116

Validate refs used in controllers don't have spaces

Closes #58572 and gitaly#1425

See merge request gitlab-org/gitlab-ce!24037

Added write_repository scope for personal access token

Closes #58847 and #51709

See merge request gitlab-org/gitlab-ce!26021

Docs: reorg Pages index

See merge request gitlab-org/gitlab-ce!27319

Externalize strings in app/services and app/helpers

See merge request gitlab-org/gitlab-ce!27220

- Externalize strings in milestones_helper
- Externalize strings in app/services
- Update PO file

Pick revert of `require-all-templates-to-include-default-stages'

Closes #59992 and #60106

See merge request gitlab-org/gitlab-ce!27312

CE: Extract EE specific files/lines for spec/features/issues

See merge request gitlab-org/gitlab-ce!26740

Part of moving gitlab into single codebase

Add translations from Crowdin

See merge request gitlab-org/gitlab-ce!27347

Fixes stylelint for page_title.scss

Closes #59873

See merge request gitlab-org/gitlab-ce!27315

The `#reload` makes to load all objects into memory,
and the main purpose of `#reload` is to drop the association cache.

The `#reset` seems to solve exactly that case.

Require all templates to use default stages

Closes #59992

See merge request gitlab-org/gitlab-ce!26954

(cherry picked from commit 39eb16aa)

e0df05cf Require all templates to use default stages

Add some frozen string to spec/**/*.rb

See merge request gitlab-org/gitlab-ce!27341

Adds frozen string to the following:

* spec/bin/**/*.rb
* spec/config/**/*.rb
* spec/controllers/**/*.rb

xref https://gitlab.com/gitlab-org/gitlab-ce/issues/59758

CE backport of image-comment-reviews

See merge request gitlab-org/gitlab-ce!27271

Display scoped labels in Issue Boards

See merge request gitlab-org/gitlab-ce!27164

This change brings new Scoped labels to Issue board as well.
With the last change, this was missed.

Resolve "Remove rails-deprecated_sanitizer"

Closes #17014

See merge request gitlab-org/gitlab-ce!27268

FSCK is usually called through sidekiq, but a rake task doesn't have a
mechanism to default to no timeout for this RPC.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/53319

Disable PostgreSQL fsync for faster CI

Closes #60435

See merge request gitlab-org/gitlab-ce!27295

Rescue and log errors raised when preparing builds

Closes #60480

See merge request gitlab-org/gitlab-ce!27351

Add frozen_string_literal to qa/

See merge request gitlab-org/gitlab-ce!27266

https://gitlab.com/gitlab-org/gitlab-ce/issues/60480