Move to new maintenance mode and check legacy first

oneshot/upgrade-pvc-cluster_deb12.yml

@@ -19,7 +19,7 @@
       when: ansible_lsb.codename is defined
 
     - name: set PVC maintenance mode
-      command: pvc maintenance on
+      command: pvc cluster maintenance on
 
     - name: secondary node
       command: "pvc node secondary {{ ansible_hostname }}"
@@ -240,7 +240,7 @@
       connection: local
 
     - name: unset PVC maintenance mode
-      command: pvc maintenance off
+      command: pvc cluster maintenance off
 
 - hosts: all
   remote_user: deploy