Fix cookied-mcp-* model generation with designate

Fixes:
  dns02.cookied-mcp-pike-dvr.local
    Cannot resolve ${_param:single_address}

Use cookiecutter-templates dns address definitions.

Change-Id: Ie6377ffd84d700f4c6cc418ed5379a6466c7b400
diff --git a/tcp_tests/templates/cookied-mcp-pike-dvr/_context-cookiecutter-mcp-pike-dvr.yaml b/tcp_tests/templates/cookied-mcp-pike-dvr/_context-cookiecutter-mcp-pike-dvr.yaml
index 0cbd226..068396b 100644
--- a/tcp_tests/templates/cookied-mcp-pike-dvr/_context-cookiecutter-mcp-pike-dvr.yaml
+++ b/tcp_tests/templates/cookied-mcp-pike-dvr/_context-cookiecutter-mcp-pike-dvr.yaml
@@ -103,6 +103,10 @@
   openstack_proxy_node02_address: 172.16.10.122
   openstack_proxy_node02_hostname: prx02
   openstack_upgrade_node01_address: 172.16.10.19
+  designate_backend: bind
+  designate_enabled: 'True'
+  openstack_dns_node01_address: 172.16.10.113
+  openstack_dns_node02_address: 172.16.10.114
   openstack_version: pike
   oss_enabled: 'False'
   oss_node03_address: ${_param:stacklight_monitor_node03_address}