add definition of bind9 backend for designate

Missing definition blocked creating configuration
from jinja template.

PROD-18263

Change-Id: Id4d3e73e4439d75c545633b033acbd7048b66808
diff --git a/classes/cluster/virtual-mcp-pike-dvr/openstack/init.yml b/classes/cluster/virtual-mcp-pike-dvr/openstack/init.yml
index 23cebad..5b77433 100644
--- a/classes/cluster/virtual-mcp-pike-dvr/openstack/init.yml
+++ b/classes/cluster/virtual-mcp-pike-dvr/openstack/init.yml
@@ -95,9 +95,12 @@
     powerdns_webserver_password: gJ6n3gVaYP8eS
     powerdns_webserver_port: 8081
     designate_admin_api_enabled: true
+    designate_server_enabled: true
     designate_domain_id: 5186883b-91fb-4891-bd49-e6769234a8fc
     designate_mdns_address: 0.0.0.0
     designate_mdns_port: 53
+    designate_bind9_rndc_key: 4pc+X4PDqb2q+5o72dISm72LM1Ds9X2EYZjqg+nmsS7FhdTwzFFY8l/iEDmHxnyjkA33EQC8
+    designate_bind9_rndc_algorithm: hmac-sha512
     designate_pdns_api_key: VxK9cMlFL5Ae
     designate_pdns_api_endpoint: "http://${_param:openstack_dns_node01_address}:${_param:powerdns_webserver_port}"
     designate_pool_manager_enabled: True