Document URL:
https://docs.openshift.com/container-platform/4.9/storage/container_storage_interface/persistent-storage-csi-manila.html

Section Number and Name:
OpenStack Manila CSI Driver Operator

Describe the issue:
Multiple updates needed in regard to CephFS and NFS

Suggestions for improvement:
-Mention that CephFS native is not supported
-Add the KCS and scale warning
-Mention that snapshots are not supported if the backend is CephFS-NFS
-Mention that FSgroup are not supported

Additional information:
Update details/text are provided in the following gdoc:
"Manila CSI Graduation Documentation Draft (OCP)"
https://docs.google.com/document/d/1WZjCh-RCnwB6jtrgGrpwo0SmzO0UtLBQbsRV4f4v_XY/edit?usp=sharing