Renamed project does not support OS

Or are we renaming all the files in object storage if we rename a namespace?

We currently are not doing that, and I think this is a problem. The FileMover that does that actually work on the FS directly. I guess there is two solutions here 1) rework the FileMover to move using the GitlabUploader/FileUploader interface or 2) implement a Fog::Storage client that does the move on the object storage or 3) ensure the hashed_storage support is on before the migration.