Merge branch '517373-instrument_service_accounts' into 'master'

Add count of created_service_accounts,28d

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/183222



Merged-by: Brian Williams <bwilliams@gitlab.com>
Approved-by: Sarah Yasonik <syasonik@gitlab.com>
Approved-by: Brian Williams <bwilliams@gitlab.com>
Reviewed-by: Aleksei Lipniagov <alipniagov@gitlab.com>
Reviewed-by: Brian Williams <bwilliams@gitlab.com>
Reviewed-by: Ankit Panchal <apanchal@gitlab.com>
Co-authored-by: habdul-razak <habdul-razak@gitlab.com>