Comment 11 for bug 2026825

Reviewed: https://review.opendev.org/c/openstack/neutron/+/892775
Committed: https://opendev.org/openstack/neutron/commit/fb5f8f2a2234329774ab50581197ea2b8dad1cfb
Submitter: "Zuul (22348)"
Branch: stable/xena

commit fb5f8f2a2234329774ab50581197ea2b8dad1cfb
Author: Lucas Alvares Gomes <email address hidden>
Date: Tue Jul 11 11:29:13 2023 +0100

    [OVN] Disable the mcast_flood_reports option for LSPs

    The mcast_flood_reports option was being enabled on LSPs as a workaround
    for a problem in core OVN. The issue in core OVN has been fixed and this
    workaround is now causing an increase in the number of actions on the
    table 38 of OVN (at the risk of hitting a size limit).

    This patch disables the mcast_flood_reports option on newer versions of
    OVN while keeping the backward compatibility with the old ones.

    Since the fix in core OVN does not expose any information to the CMS to
    tell us that the issue is fixed this patch uses the NB DB schema version
    to determine if this is an old or a new OVN version.

    Conflicts:
      neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/maintenance.py
      neutron/tests/unit/fake_resources.py

    Change-Id: I8f3f0c2d516e37145eb298b8f51d92fe9905158a
    Closes-Bug: #2026825
    Signed-off-by: Lucas Alvares Gomes <email address hidden>
    (cherry picked from commit 06dbc5227b9208887bab9bc6623098c80156f36d)