Resolve "Rollout multi-DB CI testing for gitlab_sec"

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/169907



Merged-by: David Dieulivol <ddieulivol@gitlab.com>
Approved-by: Ian Baum <ibaum@gitlab.com>
Approved-by: Andy Schoenen <asoiron@gitlab.com>
Approved-by: Radamanthus Batnag <rbatnag@gitlab.com>
Approved-by: David Dieulivol <ddieulivol@gitlab.com>
Reviewed-by: Lucas Charles <me@lucascharles.me>
Reviewed-by: David Dieulivol <ddieulivol@gitlab.com>
Co-authored-by: Gregory <11164960-ghavenga@users.noreply.gitlab.com>
Co-authored-by: Lucas Charles <lcharles@gitlab.com>
Co-authored-by: Lucas Charles <me@lucascharles.me>