Description of problem:
Satellite has the capability to centrally manage configurations, and has a nightly job that runs to check if any of the configurations on the clients differ from those hosted on the Satellite.  

If you go into "schedule" in the satellite interface you can see a
list of systems that ran the diff, however you have to click on each
system to see if there are any differences.  If you have ~500 systems
registered to your satellite this is quite an arduous task.  This
method also does not produce a report.

We have 'spacewalk-report system-history-configuration', however that
only shows that a diff was run on a given system and doesn't show
whether or not it returned any differences.

The best option I've found so far is to go into systems tab, then
click "systems" in the grey box, then "out of date".  This shows a
table of out of date systems and has a "configs" column which lists
the number of configs which differ from the satellite-managed
config.  Unfortunately, when you click "download CSV" the "configs"
column is not included in the report!

Version-Release number of selected component (if applicable):
I've verified this issue on 5.6, but I suspect it's also there in older releases.

How reproducible:
easily

Steps to Reproduce:
1. configure client(s) to have centrally managed configurations through Satellite.
2. Modify the managed configuration file(s) locally, with a text editor, on the client(s).
3. Try to generate a report of non-compliant systems either through 'spacewalk-report system-history-configuration' or exporting a csv on the systems "out of date" page.

Actual results:
no systems with out of date configs are listed in the report/csv

Expected results:
A list of systems which have failed the difference check should be listed

Additional info:
This issue has been brought up by 2 of my customers who are under regulatory pressure to generate reports showing that centrally managed configs are "compliant".