Add possibility to change mdns listening address and port

Change-Id: I5a1f8f53629a1616323f9d3a053d5dddcccdd85c
Related-Bug: https://mirantis.jira.com/browse/PROD-14930
diff --git a/tests/pillar/designate_liberty.sls b/tests/pillar/designate_liberty.sls
index bef5e4a..3ed12f5 100644
--- a/tests/pillar/designate_liberty.sls
+++ b/tests/pillar/designate_liberty.sls
@@ -6,6 +6,9 @@
     region: RegionOne
     domain_id: 5186883b-91fb-4891-bd49-e6769234a8fc
     version: liberty
+    mdns:
+      address: 0.0.0.0
+      port: 5354
     message_queue:
       members:
         - host: 127.0.0.1