Comment 5 for bug 1929054

Reviewed: https://review.opendev.org/c/openstack/charms.ceph/+/792720
Committed: https://opendev.org/openstack/charms.ceph/commit/626a5ce3ca868286d7341fd7e53e9e161f969ecc
Submitter: "Zuul (22348)"
Branch: master

commit 626a5ce3ca868286d7341fd7e53e9e161f969ecc
Author: Alex Kavanagh <email address hidden>
Date: Sat May 22 15:30:36 2021 +0100

    Fix "Remove chrony in a container" patch with test

    Unfortunately, the original patch didn't work [1]. Then a fix was
    applied also without a test [2]. Unfortunately, this wasn't correct
    either.

    This patch simplifies the function, which makes it a little easier to
    reason about. Also a test is added to stop regressions in the future.

    [1] Ie3c9c5899c1d46edd21c32868938d3290db321e7
    [2] Ifef76eacd8bd837d2181ec75e406aa35f88b8b5b
    Closes-Bug: #1929054

    Change-Id: I93f53274bc8c7e62ebb8cb7bf81ff816f4bfd98b