it wont be meaningful to call cephfs.NewcephfsDriver()
to get a new driver, it will be better if we call
cephfs.GetNewDriver() which returns the cephfs driver
object.
same goes for rbd also
Signed-off-by: Madhu Rajanna <mrajanna@redhat.com>
The driver will now probe for either ceph fuse/kernel every time
it's about to mount a cephfs volume.
This also affects CreateVolume/DeleteVolume where the mounting
was hard-coded to ceph kernel client till now - mounter configuration
and probing are now honored.
