ceph: let operator watch all namespace by default

Let's configure the operator so that it watches for all the cluster in
all namespaces.

Signed-off-by: Sébastien Han <seb@redhat.com>

cluster/examples/kubernetes/ceph/operator.yaml

@@ -42,7 +42,7 @@ spec:
         # If the operator should only watch for cluster CRDs in the same namespace, set this to "true".
         # If this is not set to true, the operator will watch for cluster CRDs in all namespaces.
         - name: ROOK_CURRENT_NAMESPACE_ONLY
-          value: "true"
+          value: "false"
         # To disable RBAC, uncomment the following:
         # - name: RBAC_ENABLED
         #   value: "false"