Add features_designate_pool_manager roles

related changes:
https://gerrit.mcp.mirantis.net/#/c/10107/ = worker mode
https://gerrit.mcp.mirantis.net/#/c/6723/ = pool_manager mode
https://gerrit.mcp.mirantis.net/#/c/10837/ = -//-

Change-Id: Iddb9ae8de787f6f2646f91cba992babcdf25cd69
diff --git "a/\173\173 cookiecutter._env_name \175\175/features/designate/system.yml" "b/\173\173 cookiecutter._env_name \175\175/features/designate/system.yml"
index 3fa26a6..f867363 100644
--- "a/\173\173 cookiecutter._env_name \175\175/features/designate/system.yml"
+++ "b/\173\173 cookiecutter._env_name \175\175/features/designate/system.yml"
@@ -11,6 +11,8 @@
         - ${_param:openstack_control_node03_address}
         - 127.0.0.1
   designate:
+    worker:
+      enabled: ${_param:designate_worker_enabled}
     server:
       pools:
         default: