Code review comment for lp://qastaging/~midokura/nova/network-refactoring-l2

>
> I completely agree that all the stubbing logic should be moved out of the
> compute manager. Unfortunately, as Jay pointed out, it's used in many places
> in Nova and some unit tests rely on this flag to be set for them to run
> successfully, which is why I added this flag here. Since fixing this will
> require non-trivial changes in Nova somewhat unrelated to this branch, Jay's
> suggestion to have another re-factoring branch focused on fixing this
> particular issue sounds like a good idea to me. What do you think?

I made a bug for this here:
https://bugs.launchpad.net/nova/+bug/816025