Comment 4 for bug 1901707

adding nova as there is a nova element that need to be fixed also.

because nova was observing the network-vif-plugged event form the dhcp agent we were not filtinging our wait condition on live migrate to only wait for backend that had plugtime events.

so once this is fixed by rodolfos patch it actully breaks live migration because we are waiting for an event that will never come until https://review.opendev.org/c/openstack/nova/+/602432 is merged.

for backporting reasons i am working in a seperate trivial patch to only wait for backends that send plugtime event. that patch will be backported first allowing rodolfos patch to be backported before https://review.opendev.org/c/openstack/nova/+/602432

i have 1 unit test left to update in the plug time patch and then ill push it and reference this bug.