What does this MR do?
Adds missing storage statistics for container images, as a follow-up to https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7754
Since the metrics need to be fetched via the container registry API, this is implemented as a cronjob which runs daily.
Are there points in the code the reviewer needs to double check?
I'm not sure how to handle the API versioning (
doc/development/api_styleguide.md doesn't say anything about it), do I need to update the code in
lib/api/v3 as well?
Why was this MR needed?
Administrators/group owners should have an overview about storage used for container images.
Screenshots (if relevant)
Does this MR meet the acceptance criteria?
Changelog entry added, if necessary
API support added
Added for this feature/bug
All builds are passing
Conform by the merge request performance guides
Conform by the style guides
Branch has no merge conflicts with
master(if it does - rebase it please)
Squashed related commits together
What are the relevant issue numbers?
Fixes #27929 (moved)