Create a new unit to test NFS Ganesha RWX enabled volumes

Summary

We need a unit that will create RWX enabled volumes from NFS-Ganesha storage class and do some Read Write operation on the same.

Details

The new Sylva unit does below:

• Create RWX enabled volumes
• Attach and mount the volumes to some application
• Do read-write operations on the mount point
• enable 'NFS-Ganesha' by default on all CAPO deployments