Add neutron_enable_qos option

Add option to enable QoS for Neutron.

Change-Id: I034aa1d88114a15c31862fa1fe813735173c312f
diff --git a/neutron/control/openvswitch/cluster.yml b/neutron/control/openvswitch/cluster.yml
index dc8e0c5..0587342 100644
--- a/neutron/control/openvswitch/cluster.yml
+++ b/neutron/control/openvswitch/cluster.yml
@@ -9,12 +9,14 @@
     neutron_global_physnet_mtu: 1500
     neutron_external_mtu: 1500
     neutron_tenant_network_types: "flat,vxlan"
+    neutron_enable_qos: False
   neutron:
     server:
       plugin: ml2
       global_physnet_mtu: ${_param:neutron_global_physnet_mtu}
       l3_ha: ${_param:neutron_l3_ha}
       dvr: ${_param:neutron_control_dvr}
+      qos: ${_param:neutron_enable_qos}
       backend:
         engine: ml2
         tenant_network_types: "${_param:neutron_tenant_network_types}"