Merge branch 'determine-relaxed-sharding-key-runner' into 'master'

Add relaxed sharding keys for runner

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/149293



Merged-by: Tiger Watson <twatson@gitlab.com>
Approved-by: Tiger Watson <twatson@gitlab.com>
Reviewed-by: Manoj M J [OOO, back on 22nd April] <mmj@gitlab.com>
Co-authored-by: Manoj M J <mmj@gitlab.com>