Suppress git output when running QA as a non-default user

Closes gitlab-qa#157

See merge request gitlab-org/gitlab-ce!17006

Resolve "Track GCP Billing enabled project changes"

Closes #41722

See merge request gitlab-org/gitlab-ce!16962

Resolve "Environment with starting slash in name causes error"

Closes #39885

See merge request gitlab-org/gitlab-ce!17071

Merge branch '43240-external-tracker-issues-don-t-have-the-correct-closing-text-appended-to-mrs' into 'master'

Resolve "External tracker issues don't have the correct closing text appended to MRs"

Closes #1 et #43240

See merge request gitlab-org/gitlab-ce!17109

Update Process document with changes to the exception request process.

See merge request gitlab-org/gitlab-ce!17118

clarify what kind of feature flags we support

See merge request gitlab-org/gitlab-ce!17113

Before, this would:

1. Not use the correct reference for non-JIRA external trackers.
2. Append 'Closes ' if an external tracker was enabled, but no issue matched the
   branch name.

Fix a too strict array-matching expectation

See merge request gitlab-org/gitlab-ce!17093

Add clearer proofreader process to docs

See merge request gitlab-org/gitlab-ce!17103

Resolve "Build Is Red: Admin > Users > Impersonation Tokens token creation allows creation of a token"

Closes gitlab-ee#4914

See merge request gitlab-org/gitlab-ce!17102

Signed-off-by: Rémy Coutable <remy@rymai.me>

Change all occurrences of ApplicationHelper#avatar_icon to use a User object where possible

Closes #42800

See merge request gitlab-org/gitlab-ce!16976

Remove ignore_column :data from Event

Closes #38135

See merge request gitlab-org/gitlab-ce!17094

Change SQL for expired artifacts to use new ci_job_artifacts.expire_at

See merge request gitlab-org/gitlab-ce!16578

Respect description and visibility when creating project from template

Closes #42601

See merge request gitlab-org/gitlab-ce!16820

Resolve "Remove notification settings for groups and projects you were previously a member of"

Closes #42481

See merge request gitlab-org/gitlab-ce!16906

And use :migration tag to use deletion strategy, and to avoid caching tables, and to lock into a particular schema.

Attempting to fix intermittent spec errors `PG::UndefinedTable: ERROR:  relation "public.untracked_files_for_uploads" does not exist`.

QA with runner cloning the repo with a deploy key

Closes gitlab-qa#148

See merge request gitlab-org/gitlab-ce!16859

Allow including custom attributes in API responses

See merge request gitlab-org/gitlab-ce!16526

Add information about projects when searching in wiki_blobs, blobs, commits scopes

Closes #42934

See merge request gitlab-org/gitlab-ce!17095

Display a link to external issue tracker when enabled

Closes #37050

See merge request gitlab-org/gitlab-ce!17030

API: Get refs for a particular commit

Closes #18014

See merge request gitlab-org/gitlab-ce!15026

Add a security harness script

Closes #43220

See merge request gitlab-org/gitlab-ce!17097

Resolve "Diff file navigation shows renamed files as deleted"

Closes #42314

See merge request gitlab-org/gitlab-ce!17091

Update database_mysql.md to remove conflicting recommendation

See merge request gitlab-org/gitlab-ce!17101