Hey,
Regarding the RHEL 7 box. Yes, I executed an install/remove sequence on a package to cause logging to the Yum log.
[A01 log]# cat yum.log
Mar 23 10:25:34 Erased: lsof-4.87-4.el7.x86_64
Mar 23 10:25:48 Installed: lsof-4.87-4.el7.x86_64
[root@A01 log]#
With regards to the above referenced RHEL6 box, there is definitely usage on the box as it is a heavily utilized box. Yum is just my example, and I did generate log messages by installing/removing a package, but as you can see from the above screenshot we are watching the audit log, slapd logs, yum and maillog. SOMETHING should have been forwarded. I'll I see when looking in nDepth for logs from the last week are the two times the agent was started.