Comment 14 for bug 1860556

Reviewed: https://review.opendev.org/708304
Committed: https://git.openstack.org/cgit/openstack/tripleo-common/commit/?id=5a1f5dbdd18712183d44955e9125ff9a805ca97f
Submitter: Zuul
Branch: stable/train

commit 5a1f5dbdd18712183d44955e9125ff9a805ca97f
Author: Cédric Jeanneret <email address hidden>
Date: Wed Jan 22 16:23:24 2020 +0100

    Make healthchecks more strict

    It was discovered that healthchecks aren't really reliable because they
    aren't strict enough.

    The current patch adds the "standard" options in order to ensure we
    actually catch errors soon enough in order to return the actual state of
    the checked element.

    It also requires a small change for the healthcheck_port() function,
    since the "piping" returned a 141 code instead of 0 due SIGPIPE being
    sent at some point[1].

    [1] https://stackoverflow.com/questions/19120263/why-exit-code-141-with-grep-q
        http://www.tldp.org/LDP/lpg/node20.html

    Change-Id: If13b6ca177d47a0af29ba5e5099e040eea62876c
    Closes-Bug: #1860556
    Related: https://bugzilla.redhat.com/show_bug.cgi?id=1794044
    (cherry picked from commit 475368e9b7b6175f4f11d99bf7ce8f5bb89744e7)