Comment 5 for bug 1734118

Reviewed: https://review.openstack.org/522540
Committed: https://git.openstack.org/cgit/openstack/tripleo-common/commit/?id=ce24645d6efb7b9d9c97648fdb778c7344a5e88a
Submitter: Zuul
Branch: stable/pike

commit ce24645d6efb7b9d9c97648fdb778c7344a5e88a
Author: marios <email address hidden>
Date: Thu Nov 23 14:23:34 2017 +0200

    Handle 'false' in when statements for ansible upgrade_tasks

    The upgrade_task that remove packages have a when clause that is
    set from the UpgradeRemoveUnusedPackages parameter. When we write
    the overcloud config and translate "tags: step" to "when: step"
    we must be careful to handle these tasks otherwise we get errors.
    See the bug for more info.

    Change-Id: Ic10ae0f3262a93ceec6ba8d938f36c937f3b594c
    Closes-Bug: 1734118
    (cherry picked from commit 2a9012a3f0ffcac7d946581b68f14daf118939c3)