Comment 18 for bug 1869808

Reviewed: https://review.opendev.org/738512
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=131bbc9a53411033cf27664d8f1fd7afc72c57bf
Submitter: Zuul
Branch: stable/queens

commit 131bbc9a53411033cf27664d8f1fd7afc72c57bf
Author: shenjiatong <email address hidden>
Date: Thu Jun 18 15:33:13 2020 +0800

    Do not block connection between br-int and br-phys on startup

    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.

    Conflicts:
        neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py

    Change-Id: I51050c600ba7090fea71213687d94340bac0674a
    Closes-Bug: #1869808
    (cherry picked from commit 90212b12cdf62e92d811997ebba699cab431d696)