Restore mariadb-clustercheck handler

This was removed in 65325d9 but it is
still called by the config playbook.

Change-Id: Idfb5b814e16056d439cf1e1318f86bbcea82d981

Author: priteau

ansible/roles/mariadb/handlers/main.yml

@@ -85,5 +85,7 @@
     volumes: "{{ service.volumes }}"
     dimensions: "{{ service.dimensions }}"
     environment: "{{ service.environment }}"
+  listen:
+    - restart mariadb-clustercheck
   when:
     - kolla_action != "config"