Merge "Add gating.dev zone to ADNS"

inventory/service/group_vars/dns.yaml

@@ -3,7 +3,11 @@ dns_repos:
     url: https://opendev.org/opendev/zone-opendev.org
   - name: zone-zuul-ci.org
     url: https://opendev.org/opendev/zone-zuul-ci.org
+  - name: zone-gating.dev
+    url: https://opendev.org/opendev/zone-gating.dev
 dns_zones:
+  - name: gating.dev
+    source: zone-gating.dev/zones/gating.dev/
   - name: opendev.org
     source: zone-opendev.org/zones/opendev.org/
   - name: acme.opendev.org