Wildcard unit status message for mysql

All we care about is whether the unit is active or not; the
message is somewhat irrelevant and has been changed in this
operator recently.

Re-enable full gating for functional test.

Change-Id: I7760e788c8cab86c2a3e1f012e2f20d48fb7ba8c

.zuul.yaml

@@ -2,13 +2,6 @@
     templates:
       - openstack-python3-charm-yoga-jobs
       - openstack-cover-jobs
-#      - microk8s-func-test
-    check:
-      jobs:
-        - charmbuild:
-            nodeset: ubuntu-focal
-        - zaza-smoke-test:
-            nodeset: ubuntu-focal
-            voting: false
+      - microk8s-func-test
     vars:
       charm_build_name: ovn-relay-k8s

tests/tests.yaml

@@ -61,7 +61,7 @@ target_deploy_status:
     workload-status-message-regex: '^$'
   mysql:
     workload-status: active
-    workload-status-message-regex: '^Unit is ready.*$'
+    workload-status-message-regex: '^.*$'
   placement:
     workload-status: active
     workload-status-message-regex: '^$'