Description of problem:
/usr/share/rh-rhua/rhui-debug.py, which is the script that sos uses to collect config and log files from RHUI, is currently packaged in rh-rhui-tools. This package doesn't get installed on CDS nodes, however, which means that it's impossible to get config and log files from there (unless you copy the file there yourself).

Let's not install rh-rhui-tools on CDSes; that's not where this package belongs. Instead, I see two options:

1 - move the script to rh-rhui-tools-libs; this package gets installed on both RHUA and CDS nodes
2 - create a separate package just for this script and modify the puppet files to install that package on RHUA and CDS nodes; there actually was such a package in RHUI 2:

$ rpm -ql rh-rhui-tools-debug-script
/usr/share/rh-rhua/rhui-debug.py
/usr/share/rh-rhua/rhui-debug.pyc
/usr/share/rh-rhua/rhui-debug.pyo
$ rpm -qi rh-rhui-tools-debug-script
Name        : rh-rhui-tools-debug-script   Relocations: (not relocatable)
Version     : 2.1.42                            Vendor: Red Hat, Inc.
Release     : 1.el6                         Build Date: Tue 21 Mar 2017 09:25:50 AM EDT
Install Date: Fri 25 May 2018 06:21:34 AM EDT      Build Host: x86-041.build.eng.bos.redhat.com
Group       : Applications/Internet         Source RPM: rh-rhui-tools-2.1.42-1.el6.src.rpm
Size        : 9993                             License: GPLv2
Signature   : RSA/8, Tue 21 Mar 2017 11:56:36 AM EDT, Key ID 199e2f91fd431d51
Packager    : Red Hat, Inc. <http://bugzilla.redhat.com/bugzilla>
URL         : http://redhat.com
Summary     : Debug gathering script for RHUI.
Description :
Debug gathering script for RHUI.

Additional info:
https://bugzilla.redhat.com/show_bug.cgi?id=1591027#c7