Comment 6 for bug 1843418

Reviewed: https://review.opendev.org/c/openstack/neutron/+/681258
Committed: https://opendev.org/openstack/neutron/commit/729290357b0961eb72d7b9a540b5098ab54e1a6d
Submitter: "Zuul (22348)"
Branch: master

commit 729290357b0961eb72d7b9a540b5098ab54e1a6d
Author: Slawek Kaplonski <email address hidden>
Date: Tue Sep 10 15:36:39 2019 +0200

    [tests] Don't fail if kill cmd says that process don't exists

    In e.g. functional tests, if kill command called by
    RootHelperProcess.kill() method will return error that process
    with specified PID don't exists, test should not fails.

    This patch adds handling of such case in this method and reraise
    exception always if error code is different than 1 or
    raised exception have got different error message.

    Change-Id: I92c8f74f1dd2e76141e1e024a22589e9ddc4ff57
    Closes-Bug: #1843418