Enable Tacker health check

This patch enables health check execution for Tacker docker container.

Change-Id: Id134a649e046625218c1593766b6833baaa9f168
Depends-On: Ib82cb849540694106a869ec81694f1159967ee79
(cherry picked from commit e9bf3415c6)

docker/services/tacker.yaml

@@ -121,6 +121,8 @@ outputs:
             net: host
             privileged: false
             restart: always
+            healthcheck:
+              test: /openstack/healthcheck
             volumes:
               list_concat:
                 - {get_attr: [ContainersCommon, volumes]}