Cannot delete images using external registry (docker registry 2.7) with gitlab jwt auth

Summary

When using external docker registry version 2.7 we are unable to delete images through web nor through Docker API. This is probably caused by change of access authorization request which in previous versions sent action:* for requesting delete permissions. Since 2.7 (AFAIK) it is sending action:delete which is not handled in (https://gitlab.com/gitlab-org/gitlab-ce/blob/master/app/services/auth/container_registry_authentication_service.rb#L111)

Steps to reproduce

1. Install gitlab + setup external registry
2. Push some images
3. Try to delete them

What is the current bug behavior?

Unable to delete docker images from registry because of gitlab cannot authorize delete action

What is the expected correct behavior?

It should authorize delete action for owner/maintainer user?

Possible fixes

Add delete case next to * case in: https://gitlab.com/gitlab-org/gitlab-ce/blob/master/app/services/auth/container_registry_authentication_service.rb#L114