Comment 5 for bug 2028944

Reviewed: https://review.opendev.org/c/openstack/openstack-ansible/+/891209
Committed: https://opendev.org/openstack/openstack-ansible/commit/7f2af146140c126c926b900bbcabf610ad89bcaf
Submitter: "Zuul (22348)"
Branch: stable/2023.1

commit 7f2af146140c126c926b900bbcabf610ad89bcaf
Author: Damian Dabrowski <email address hidden>
Date: Fri Aug 11 17:38:07 2023 +0200

    Avoid breaking horizon during Antelope upgrade

    During Antelope upgrade, haproxy-install.yml configures base service
    listening on ports 80 and 443.
    But at this point, horizon frontend is not removed yet so haproxy has
    two frontends listening on 80/443.
    During os-horizon-install.yml, horizon frontend is removed and
    appropriate haproxy maps config is applied.
    As a result, between haproxy-install.yml and os-horizon-install.yml,
    horizon will encounter intermittent issues.
    This patch triggers horizon service reconfiguration during Antelope
    upgrade when running haproxy-install.yml playbook.
    To be precise: when horizon is already deployed in an environement but
    its maps config is not there yet, haproxy will trigger reconfiguration
    of horizon service.
    This change is intendent to land only in 2023.1. Upgrades from 2023.1
    to 2023.2 or 2024.1 are not affected.

    Closes-Bug: #2028944
    Change-Id: I9df78f286c1fcc3204b35928829a981addf876e8