when node fencing is triggered and a negative case where
one deployment pod consuming pv not provisioned by csi
and another deployment pod with rbd rwo are on the same
node and node fencing is triggered.
In this case rook operator panics since it is trigger to get
field `pv.Spec.CSI.Driver` which will be nil.
Also, skip static pv as there is no `imageName` in the spec
rbd status command will fail.
Signed-off-by: subhamkrai <srai@redhat.com>