fullstack: Actually run ovsfw tests
fullstack: Actually run ovsfw tests

super(...).setUp() must be called before OVSVersionChecker so that
rootwrap gets configured first.

Change-Id: Ie152f64a598a68566e36a4903017132e03eb35a6
Closes-bug: #1709547

huntxu/neutron,eayunstack/neutron,mahak/neutron,mahak/neutron,openstack/neutron,noironetworks/neutron,eayunstack/neutron,huntxu/neutron,noironetworks/neutron,mahak/neutron,openstack/neutron,openstack/neutron