Updated openstack/openstack
Project: openstack/neutron  5a3c25c2e5f91f92baee6ee2fae74aa1404a4294

Call setup once in unit tests

Calling it twice will cause testtools to fail.
This applies to load balancer, vpn, and firewall unit tests.

Change-Id: If9068d706093ff24602dbb1000f599b2479616c8