This changes the package loaders so they now create synthetic releases instead of synthetic revisions (check parent task for more details).
This needs a coordinated deployment.
Plan:
- [x] stop deposit loader
- [x] upgrade deposit server
- [x] upgrade packages loader
- [x] restart lister service
- [x] restart package loader services (ongoing)
- [ ] make sure it works (deposit loader is)
- [ ] check existing snapshots (with revisions as branches) are upgraded (to releases as
branches)