Block traffic between br-int and br-physical is over kill
and will at least
1. interrupt vlan flow during startup, and is particularly
so if dvr enabled
2. if let's rabbitmq is not stable, it is possible data plane
will be affected and vlan will never work.
Using openstack on k8s particularly amplifies the problem
because pod could be killed pretty easily by liveness
probes.
Change-Id: I51050c600ba7090fea71213687d94340bac0674a
Closes-Bug: #1869808
90212b12cd