Adding barrier message support with futures to IOFSwitch driver

Change-Id: I0f2de6c60165c2b6687d647850beb7ce23def83a
diff --git a/conf/onos.properties b/conf/onos.properties
index 9115c0c..c86d9f7 100644
--- a/conf/onos.properties
+++ b/conf/onos.properties
@@ -23,5 +23,5 @@
 # Uncomment and list all the ZooKeeper instances after localhost on multi-instance deployment.
 #net.onrc.onos.core.registry.ZookeeperRegistry.connectionString = localhost:2181,otherhost:2181
 # Specify a network configuration file to be used by the NetworkConfigManager
-#net.onrc.onos.core.configmanager.NetworkConfigManager.networkConfigFile = conf/my_network.conf
+net.onrc.onos.core.configmanager.NetworkConfigManager.networkConfigFile = conf/sr-3node.conf