Allow to use cross project pipelines

Closes gitlab-ce#30716

See merge request !2017

Fix spec for Gitlab::EtagCaching::Router

See merge request !2065

Related issues [BE]

Closes #2001

See merge request !1719

[Elasticsearch] Improve code search for camel case

Closes #2003

See merge request !2054

Update testing.md `# Frontend Testing` to include integration spec for edge cases

See merge request !2055

Geo - Properly set tracking database connection and cron jobs on secondary node

Closes #2181 and #2289

See merge request !1987

Merge branch 'ee-32995-issue-contents-dynamically-replaced-with-stale-version-after-saving-or-refreshing-relative-external_url-only' into 'master'

EE port of: "Fix incorrect ETag cache key when relative instance URL is used"

See merge request !2053

Pipelines quota for user profile

Closes gitlab-ce#30228

See merge request !1536

Add closed_at field to issue CSV export

See merge request !2052

This reverts commit 6d9acc49b29b9a735148198a15654728f7f2ba91.