bgh/devstack — comment on commit e533b7c3ac42a8c88074fc2df719c11ab10bf1c4
File: stack.sh line 787
By danwent:

creating an integration bridge is really only needed if we are on a compute host, so we probably want to scope this with q-agt, not q-srv. Also, if we use a flag to indicate that the quantum plugin is OVS, we should scope with that as well.