Installing NORMAL rules on all the default neutron bridges.

Installing NORMAL rules on all the default neutron bridges.

Opendaylight controller's OF1.0 plugin deletes all the OF rules upon initial connection.
This could be a valid scenario on regular scenario, but it breaks some basic assumptions
in a Openstack/devstack deployment. Hence this fix will override that behaviour by installing
a NORMAL rule as the default rule to avoid data traffic to be punted to the controller.
This is a temporary measure to solves some major issues seen on couple of deployment scenarios.
We will address it more elagantly once we integrate with the new OF plugin.

Change-Id: Ie53c85c3e1549d07392d6c8129adb05806ed32cd
Signed-off-by: Madhu Venugopal <mavenugo@gmail.com>