Migration to new deployment method - rookify

[fkr]

As a user, I want to be able to migrate my old ceph setup to Rook so that the migration process is as smooth as possible.

Definition of Ready:

• [ ] Migrations are possible
• [ ] Conditions if a migration is possible are documented
• [ ] Possible pre-migration tasks are documented

Definition of Done:

• [ ] All acceptance criteria are met (TODO: shall we define thoose?)
• [ ] Changes have been reviewed
• [ ] CI tests have run successfully
• [ ] Documentation has been updated
• [ ] Release Notes have been updated

Tasks

• [ ] Implement tools for the migration to rook
  • [ ] Framework implementation
    • [x] Modular approach
    • [ ] Unit tests for framework
  • [ ] Migration modules for ceph daemons
    • [ ] MONs
    • [ ] MGRs
    • [ ] OSDs
    • [ ] RGWs
    • [ ] MDSs
  • [ ] Migration modules for ceph resources to rook CRDs
    • [ ] CephBlockPool
    • [ ] CephFileSystem
    • [ ] CephObjectStore
    • [ ] Unit tests for migration modules
• [ ] Test the new migration tools
  • [ ] Testbed migration
  • [ ] Test with cloud provider setups
• [ ] Document migration path and tools
  • [ ] conditions
  • [ ] pre-migration tasks
  • [ ] configuration files

[fkr]

Prepped by @brueggemann - thanks!