Comment 3 for bug 1108985

This appears to be affecting tempest-devstack-gate-vm-* jobs too. See http://logs.openstack.org/21690/6/gate/gate-tempest-devstack-vm-postgres-full/2585/

That leads me to think the potential port selection race I talked about above is not at fault here (as we shouldn't be attempting to use random ports when running glance in devstack).