make nova functional tests voting
make nova functional tests voting

This turns the Nova functional tests voting and adds them to the nova
gate.

Depends-On: Ic276522851fba6d1d95dd1f3bdde1d48935568a3

which lands a no-op tox stub so functional job passes

Change-Id: I3b6a657654f36b374d2fc9902f24d0fde18e93d5

dongwenjuan/project-config,anbangr/osci-project-config,coolsvap/project-config,open-switch/infra_project-config,coolsvap/project-config,Tesora/tesora-project-config,noorul/os-project-config,openstack-infra/project-config,anbangr/osci-project-config,dongwenjuan/project-config,citrix-openstack/project-config,citrix-openstack/project-config,open-switch/infra_project-config,noorul/os-project-config,Tesora/tesora-project-config,openstack-infra/project-config