Comment 6 for bug 1789157

Reviewed: https://review.opendev.org/701932
Committed: https://git.openstack.org/cgit/openstack/networking-ovn/commit/?id=c6e5339d3d392342d643d777263064f4a7f7a9aa
Submitter: Zuul
Branch: stable/train

commit c6e5339d3d392342d643d777263064f4a7f7a9aa
Author: Maciej Józefczyk <email address hidden>
Date: Tue Dec 17 12:37:48 2019 +0000

    Add support for multiple L4 protocols withing same LB

    This change introduces a way of providing multiple listeners and pools
    on the same Load Balancer, but with different L4 protocols.

    In case there are more than one unique protocol defined in Octavia pools
    or Octavia listeners the OVN driver now adds another Load_Balancer row
    per protocol, but with the same name. The selection of which OVN
    Load_Balancer should be used is done by a protocol key.

    This change also adds possibility to expose two listeners on the same
    port, but with different L4 protocol. The common use-case is providing
    a DNS service that listens both on UDP and TCP sockets.

    Partial-Bug: #1789157
    Change-Id: I2ee13b75713e7538d1b4f70207a90a95315eb914