this is sporadically failing.

this suite was broken for a very long time and just recently revived so this
issue is probably something that is not a new bug. It does need to be
investigated as we tighten the screws on netvirt quality.

https://logs.opendaylight.org/releng/jenkins092/netvirt-csit-1node-openstack-pike-sfc-carbon/26/log.html.gz#s1-t12-k2-k1-k1-k5