PVC create resiliency
PVC create resiliency

While creating a PVC, if the operator dies between successfully creating a rbd
image and associating it with a PV, that PVC will never be completed. A
restarted operator will also fail to complete the task as the requested rbd
image already exists. With the assumption that a PVC UID will always be unique,
this patch will try to use the existing volume and complete the PVC request.

Resolves: #2072

Signed-off-by: Ganesh Maharaj Mahalingam <e84b6eb1374b2034268ad16b797fbec9318eafab@intel.com>

rook/rook,rook/rook,rook/nfs,rook/nfs,rook/nfs,rook/rook,rook/rook,rook/rook