Merge branch 'sc1-fix-repo-cache-multistore' into 'master'

Use multistore pool for RepositoryCache.cache_store

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/145474



Merged-by: Bob Van Landuyt <bob@gitlab.com>
Approved-by: Bob Van Landuyt <bob@gitlab.com>
Approved-by: Gregorius Marco <gmarco@gitlab.com>
Reviewed-by: Bob Van Landuyt <bob@gitlab.com>
Reviewed-by: Gregorius Marco <gmarco@gitlab.com>
Co-authored-by: Sylvester Chin <schin@gitlab.com>