Comment 6 for bug 1671804

By merging the above fix we assured that openvswitch-switch service is running before Neutron agent.
But during the test I've faced issues:
http://paste.openstack.org/raw/603134/

neutron.agent.ovsdb.impl_vsctl tries to call ovs-vsctl directly without using neutron-rootwrap

Something like http://paste.openstack.org/raw/603161/ helps but I guess there is a much better way to do that.