Two things at ones, as there was no clean way to seperate the commit and
give me feedback from the tests.

But the model Artifact is now JobArtifact, and the table does not have a
type anymore, but the metadata is now its own model:
Ci::JobArtifactMetadata.

To allow jobs/builds to have multiple artifacts, and to start seperating
concerns from Ci::Build a new model is created: Ci::Artifact.

Changes include the updating of the ArtifactUploader to adapt to a
slightly different interface. The uploader expects to be initialized
with a `Ci::Build`.

Futher a migration with the minimal fields, the needed foreign keys and
an index.

Last, the way this works is by prepending a module to Ci::Build so we
can basically override behaviour but if needed use `super` to get the
original behaviour.

Documentation bug fixes: Added procedure to disable built-in Issues.

See merge request gitlab-org/gitlab-ce!15581

Merge branch '40746-broken-master-due-to-failure-in-spec-services-clusters-applications-schedule_installation_service_spec-rb' into 'master'

Ensure `Namespace`'s is namespaced in `Gitlab::Kubernetes::Helm#initialize` and fix a transient failing spec due to that

Closes #40746

See merge request gitlab-org/gitlab-ce!15684

Ensure `Namespace`'s is namespaced in `Gitlab::Kubernetes::Helm#initialize` and fix a transient failing spec due to that
Signed-off-by: Rémy Coutable <remy@rymai.me>

Show only group name by default and put full namespace in tooltip in Groups tree

Closes #40286

See merge request gitlab-org/gitlab-ce!15650

Extract class responsible for building a pipeline

Closes #38460

See merge request gitlab-org/gitlab-ce!14762

Adds validation for Project#ci_config_path not to contain leading slash

Closes #34683

See merge request gitlab-org/gitlab-ce!15672

Gracefully handle case when repository's root ref does not exist

Closes #40615

See merge request gitlab-org/gitlab-ce!15678

Set EE variable for package build triggers from GitLab EE repository

Closes omnibus-gitlab#3006

See merge request gitlab-org/gitlab-ce!15677

This was failing regularly with an Error 500 when the API branches endpoint
was used.

Closes #40615

Clean up Capybara configuration

Closes #40599

See merge request gitlab-org/gitlab-ce!15644

issue note store

See merge request gitlab-org/gitlab-ce!15657

Align Select2 search field

Closes #39451

See merge request gitlab-org/gitlab-ce!15048

allow caching options to be specified for counting services

See merge request gitlab-org/gitlab-ce!15651

Improve require input spec

See merge request gitlab-org/gitlab-ce!15654