Add role primary to single manila

Change-Id: I352ed98fe91eac559d0227622bfea2a9b0a4512f
diff --git a/manila/control/single.yml b/manila/control/single.yml
index 262a158..b2036d3 100644
--- a/manila/control/single.yml
+++ b/manila/control/single.yml
@@ -2,11 +2,14 @@
  - system.manila.common.cluster
  - system.apache.server.site.manila
 parameters:
+  _param:
+    openstack_node_role: primary
   manila:
     common:
       dhss: false
       version: ${_param:openstack_version}
     api:
+      role: ${_param:openstack_node_role}
       enabled: true
       version: ${_param:openstack_version}
       role: ${_param:openstack_node_role}