Enable healthcheck script in clustercheck service

The clustercheck container uses the same container image as the mysql
service. That image already contains a healthcheck script that can
monitor either mysql or clustercheck. So we can enable healthcheck
in the clustercheck service as well.

Change-Id: I36602a20822b5544e8c1cd2aa0d8ae4a84de1c6e
Closes-Bug: #1856085

deployment/pacemaker/clustercheck-container-puppet.yaml

@@ -81,6 +81,8 @@ outputs:
             image: {get_param: ContainerClustercheckImage}
             restart: always
             net: host
+            healthcheck:
+              test: /openstack/healthcheck
             volumes:
               list_concat:
                 - {get_attr: [ContainersCommon, volumes]}