Change neutron-fwaas tempest config for v2
Change neutron-fwaas tempest config for v2

Late discussions on how the neutron-fwaas devstack template should
function resulted in the fwaas v2 case being configured a little
differently.  Therefore the neutron-fwaas v2 tempest test needs a minor
adjustment to select FWaaS v2 properly.

Change-Id: Idc91b573eb69e0601576a851963e4bb2914715f0

openstack-infra/project-config,openstack-infra/project-config,Tesora/tesora-project-config,Tesora/tesora-project-config