Merge branch '509421-object-storage-key-unique' into 'master'

Use only a single column to store the file path in virtual registries

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/179418



Merged-by: Erick Bajao <fbajao@gitlab.com>
Approved-by: Moaz Khalifa <mkhalifa@gitlab.com>
Approved-by: Bishwa Hang Rai <bhrai@gitlab.com>
Approved-by: Erick Bajao <fbajao@gitlab.com>
Reviewed-by: David Fernandez <dfernandez@gitlab.com>
Reviewed-by: Max Woolf <mwoolf@gitlab.com>
Reviewed-by: Bishwa Hang Rai <bhrai@gitlab.com>
Reviewed-by: Moaz Khalifa <mkhalifa@gitlab.com>
Co-authored-by: David Fernandez <dfernandez@gitlab.com>