This only implements one of three upcoming strategies of connecting
upstream pipeline with a downstream pipeline. Here we change bridge job
status to success as soon as downstream pipeline gets enqueued for
processing.

Move GenerateGitLabSubscriptions to post-deploy migration

See merge request gitlab-org/gitlab-ee!8831

Fixed notes not being applied to diff lines

See merge request gitlab-org/gitlab-ee!8828

Reinstate changes lost due to automatic merging

See merge request gitlab-org/gitlab-ee!8829

This avoids Sidekiq versioning pitfalls where the deploy host schedules
a new migration, and the older Sidekiq hosts don't know about this
migration.

See https://gitlab.com/gitlab-com/gl-infra/infrastructure/issues/5746

The automatic merging code used `--strategy=ours`, which turned out to
be incorrect; instead we wanted `--strategy=recursive
--strategy-option=ours`. This small difference results in merging
throwing away _all_ EE changes in favour of CE changes, instead of only
doing this for conflicts.

This commit ensures that EE has all the appropriate changes. The diff
was generated by cherry picking all merge commits made since two days
ago, picking them with `--strategy=recursive --strategy-option=ours`.

Increase parallelism for EE-only RSpec jobs

See merge request gitlab-org/gitlab-ee!8824

EE Fix issuables sort direction button parameters

See merge request gitlab-org/gitlab-ee!8826

Revert unnecessary changes to CI configuration

See merge request gitlab-org/gitlab-ee!8822

Removed duplicate line from SelectsHelper

See merge request gitlab-org/gitlab-ee!8823

We recently increased global RSpec parallelism to 50, so these EE-only
jobs often became the bottleneck.

EE: Resolve various database deprecation warnings

See merge request gitlab-org/gitlab-ee!8818

Support older NGINX version forwarding the client certificate for smartcard auth

See merge request gitlab-org/gitlab-ee!8784

Resolve various database deprecation warnings

See merge request gitlab-org/gitlab-ce!23772

Fix labels parameter being deleted from filter
when clicking sort direction button on issues/merge requests search bar.

This was added by accident due to a CE and EE MR both modifying this
file in a slightly different way.

This reverts commit 2fc61b12, reversing
changes made to e26d96d3.

Refactor Project#create_or_update_import_data

See merge request gitlab-org/gitlab-ce!23701

Move more EE specific code out of CE code

See merge request gitlab-org/gitlab-ee!8424

Allow matching only the repo-root for CODEOWNERS

Closes #8593

See merge request gitlab-org/gitlab-ee!8708

Do not save user preferences on read-only mode

Closes #55024

See merge request gitlab-org/gitlab-ce!23698

This fixes two cases of EE specific code extending
ActiveRecord::Migration, instead of extending
ActiveRecord::Migration[4.2].