ceph: more robust removal of cluster finalizer
ceph: more robust removal of cluster finalizer

The cluster finalizer in some scenarios was not being removed
during cluster removal. Specifically, if the cluster CR had been
modified, the operator would always fail to remove the finalizer.
This could occur when the CR status is updated around the same time
that the cluster is deleted. Therefore, we need to remove the finalizer
from a freshly retrieved instance of the cluster.

Signed-off-by: travisn <a8b474fdb3f77f44446f0ab9ddca8147b09b3a9e@redhat.com>

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