Add functionality to migrate In-tree RBD Volumes to corresponding Ceph-CSI volumes.
Highlights:
- Migrate single In-tree PVC to Ceph-CSI.
- Migrate all PVCs provisioned by an In-tree Storageclass to Ceph-CSI Storageclass.
CI:
Added rigorous CI to validate migration of in-tree provisioned volumes to ceph-csi using Github actions.