Revert "Make gate-tempest-devstack-vm-neutron non-voting"

This reverts commit 33051edaf1420c91aa8da061ab58ee733c4d06c7.

http://lists.openstack.org/pipermail/openstack-dev/2013-August/012961.html

Change-Id: Iacdbfd2634f11792763df53bb0368f48db27e17c
Merge "Revert "Make gate-tempest-devstack-vm-neutron non-voting""