openstack puppet module tests broken under puppet 4.x

[Alex Schultz]

The openstack module in fuel-library used to have passing tests, but it appears that they have not been kept updated and are failing again.

http://paste.openstack.org/show/476690/

[Alex Schultz (alex-schultz)]

These failures are due to puppet 4.x which we currently do not support.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/237025

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/237025
Committed: https://git.openstack.org/cgit/openstack/fuel-library/commit/?id=1005f8618068db6a2740e767207569a97d891d54
Submitter: Jenkins
Branch: master

commit 1005f8618068db6a2740e767207569a97d891d54
Author: Alex Schultz <email address hidden>
Date: Mon Oct 19 09:47:43 2015 -0500

    Make openstack module tests work under puppet 4

    This change updates the rsyslog default for the custom config option to
    be '' rather than undef so that the correct file is used for the client
    and service configurations under puppet 4. Additionally this change
    fixes the parameter check for rabbit_hosts for the openstack module so
    that it passes.

    Change-Id: I128abd4cc27297d76db8f6d05e583cfbeae8abc7
    Closes-Bug: #1507614