Add designate dashboard to horizon/server/plugin and add defaults

Related: PROD-31956

Change-Id: Ibb0a83c57c79f5097eb7f3953596ce5de7789224
diff --git a/defaults/openstack/init.yml b/defaults/openstack/init.yml
index c37e551..c269b05 100644
--- a/defaults/openstack/init.yml
+++ b/defaults/openstack/init.yml
@@ -137,6 +137,7 @@
     designate_old_version: ${_param:openstack_old_version}
     designate_version: ${_param:openstack_version}
     designate_upgrade_enabled: ${_param:openstack_upgrade_enabled}
+    designate_export_policy_grains: true
     # Ironic
     mysql_ironic_username: ironic
     keystone_ironic_username: ironic
@@ -227,6 +228,9 @@
     horizon_old_version: ${_param:openstack_old_version}
     horizon_version: ${_param:openstack_version}
     horizon_upgrade_enabled: ${_param:openstack_upgrade_enabled}
+    ## Dashboards
+    horizon_dashboard_designate_file: designate_policy.json
+    horizon_dashboard_designate_grain: designate_policy
     # Octavia
     mysql_octavia_username: octavia
     keystone_octavia_username: octavia