Comment 6 for bug 1860155

Reviewed: https://review.opendev.org/704463
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=e204f16e5f3ca238a9c8157fab7ba673efb71db9
Submitter: Zuul
Branch: stable/train

commit e204f16e5f3ca238a9c8157fab7ba673efb71db9
Author: Nate Johnston <email address hidden>
Date: Mon Jan 27 18:04:52 2020 -0500

    Fix kill-script

    This change squashes two changes that are being backported from the
    tripleo-ansible repo. They are to the same file, which was relocated to
    tripleo-ansible between Train and Ussuri.

    Change https://review.opendev.org/703123: In the kill-script there is a
    string "Unknown action ${SIG} for ${$CT_NAME} ${CT_ID}" which results in
    a "bad substitution" error, as there is no variable named with what the
    contents of the CT_NAME environment variable contains. Remove the
    extraneous '$'.

    Change https://review.opendev.org/703128: The reason bug #1860155 was
    triggered was because the kill script did not have a stanza for handling
    the signal that was passed in, which is signal 15. Since signal 15 is
    unhandled, keepalived processes will still stick around. Add handling
    for signal 15.

    Change-Id: Ib47fc73b498b6366efa4ae5b16855bd45cb3ec91
    Fixes-Bug: #1860155