Comment 4 for bug 1639868

Reviewed: https://review.openstack.org/400956
Committed: https://git.openstack.org/cgit/openstack/instack-undercloud/commit/?id=0a316cb503f4be8b80e194ced4b285b4767d6ec4
Submitter: Jenkins
Branch: master

commit 0a316cb503f4be8b80e194ced4b285b4767d6ec4
Author: Alex Schultz <email address hidden>
Date: Tue Nov 22 13:40:42 2016 -0700

    Fix package update cases

    This change addresses two issues with the existing
    puppet-stack-config. The first being if run on a non-RedHat osfamily,
    the existing code will fail with a non-helpful message. The second issue
    being that if update_packages is disabled, the resource dependency will
    fail because Exec['package-upgrade] is not defined.

    Change-Id: I682167d10828280a031f6f84c1de11b9bd840db5
    Closes-Bug: #1639868