Comment 2 for bug 1942510

Reviewed: https://review.opendev.org/c/openstack/python-tripleoclient/+/807257
Committed: https://opendev.org/openstack/python-tripleoclient/commit/351bc64f4cbd823bcfc33676b11af4d2eac831c3
Submitter: "Zuul (22348)"
Branch: stable/wallaby

commit 351bc64f4cbd823bcfc33676b11af4d2eac831c3
Author: Cédric Jeanneret <email address hidden>
Date: Thu Sep 2 11:38:59 2021 +0200

    Allow to pass arbitrary parameters to TCIB image config

    This new parameter takes key=value format, and can be passed multiple
    times.

    Those key/values can then be used within the image description files in
    order to make them support different releases, or just use the value in
    case we have a specific version (python-version for instance).

    This will be useful in order to support container builds on both CS8 and
    CS9 releases without too many duplications or headaches.

    Note that a "tcib_" prefix is enforced for the keys.

    Closes-Bug: #1942510
    Change-Id: I7fe4d59f1fb76ba59d065b56c5900f4d3cfcda2e
    (cherry picked from commit fb6daacedd733fbaa801507a7acf14c699faf0c5)