Change the default topo to sr-ecmp.conf

Change-Id: I0bf39bee0d2c409ffca2aef5698ebd073fc2d586
diff --git a/conf/onos.properties b/conf/onos.properties
index 89b4c80..a3e1d19 100644
--- a/conf/onos.properties
+++ b/conf/onos.properties
@@ -23,4 +23,4 @@
 # 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/sr-ecmp10.conf
+net.onrc.onos.core.configmanager.NetworkConfigManager.networkConfigFile = conf/sr-ecmp.conf