Test: Changes to cordSubscriber to delete ovs groups before the test.
This is done through a remote rpc or local as appropriate.
This also seems to make the single channel N subscriber tests receive packets after join as OVS seems flaky otherwise.
Support for cord-test.py run to execute tests with container name setup with:
cord-test.py setup --olt --start-switch
option.

Change-Id: Ifca43e9b7e76bb231ed8ad84b6971d985b66b9e1
diff --git a/src/test/setup/of-bridge-local.sh b/src/test/setup/of-bridge-local.sh
index 8ad125d..5bd3ba7 100755
--- a/src/test/setup/of-bridge-local.sh
+++ b/src/test/setup/of-bridge-local.sh
@@ -9,7 +9,7 @@
 fi
 pkill -9 ofdatapath
 pkill -9 ofprotocol
-service openvswitch-switch start
+service openvswitch-switch restart
 echo "Configuring ovs bridge $bridge"
 ovs-vsctl del-br $bridge
 ovs-vsctl add-br $bridge