Comment 9 for bug 1815243

Reviewed: https://review.openstack.org/635949
Committed: https://git.openstack.org/cgit/openstack/charm-cinder/commit/?id=9eb22b894914f36da8ceaa71eb243e465b6a9731
Submitter: Zuul
Branch: master

commit 9eb22b894914f36da8ceaa71eb243e465b6a9731
Author: Ryan Beisner <email address hidden>
Date: Fri Feb 8 15:47:41 2019 -0600

    Update pre-install hooks to fail on error

    The pre-install operations may fail, yet that failure is not
    elevated to the user. This masks the failure and makes early
    package install issues difficult to troubleshoot.

    If the basic pre-install script fails, the charm should not
    proceed to later hooks as the requirements may not be met.

    Hashbangs for bash should specify -e (errexit) on all of the
    pre-install bash scripts.

    Change-Id: I3e421d586df341113bbcd1888f280a2ea24c52b9
    Closes-bug: #1815243
    Partial-bug: #1815231