Enable OVN metadata agent

Change-Id: If36842087385490effff194062f35fb3b036a776
diff --git a/neutron/control/ovn/single.yml b/neutron/control/ovn/single.yml
index 92b8258..f3dd749 100644
--- a/neutron/control/ovn/single.yml
+++ b/neutron/control/ovn/single.yml
@@ -9,6 +9,7 @@
     neutron_tenant_network_types: "geneve,flat"
     neutron_enable_qos: False
     neutron_enable_vlan_aware_vms: False
+    neutron_ovn_metadata_enabled: True
   neutron:
     server:
       global_physnet_mtu: ${_param:neutron_global_physnet_mtu}
@@ -23,6 +24,8 @@
         mechanism:
           ovn:
             driver: ovn
+        ovn:
+          metadata_enabled: ${_param:neutron_ovn_metadata_enabled}
       compute:
         region: ${_param:openstack_region}
       database: