Comment 8 for bug 1843023

Reviewed: https://review.opendev.org/681511
Committed: https://git.openstack.org/cgit/openstack/tripleo-upgrade/commit/?id=1c2309761315b41432c52295593e7ed9e30f0411
Submitter: Zuul
Branch: stable/stein

commit 1c2309761315b41432c52295593e7ed9e30f0411
Author: Sofer Athlan-Guyot <email address hidden>
Date: Tue Sep 10 15:29:11 2019 +0200

    Fix container validation after overcloud update.

    The current validation script is tuned to docker. We switch to podman
    and adjust the expected output.

    Change-Id: I06949a8b63dba58761e901584c1e49b4f63d2356
    Closes-Bug: #1843023
    (cherry picked from commit 5aa1aee425880f46c9844afab144a6c829145340)