Support Quantum security group

Adds Q_USE_SECGROUP flag for quantum security group

- Added has_quantum_plugin_security_group method for each plugin.
- Set NOVA_VIF_DRIVER to the hybrid VIF driver for plugins with
  iptables based security group support.
- Specifying device_owner type on debug port in lib/quantum and
  quantum-adv-test.sh. This change makes apply quantum security
  group fro debug port

Change-Id: Ifd155798912247d85a9765ef73a2186b929237b4
diff --git a/lib/quantum_plugins/brocade b/lib/quantum_plugins/brocade
index ac91143..6e26ad7 100644
--- a/lib/quantum_plugins/brocade
+++ b/lib/quantum_plugins/brocade
@@ -45,5 +45,10 @@
     iniset $conf_file DEFAULT interface_driver quantum.agent.linux.interface.BridgeInterfaceDriver
 }
 
+function has_quantum_plugin_security_group() {
+    # 0 means True here
+    return 0
+}
+
 # Restore xtrace
 $BRCD_XTRACE