QA testing tool for stable images.

Hi guys, I'm a member of a OpenSource team here in Brazil that customizes a RHEL based system. We usually use the Fedora infrastructure (bodhi, koji, etc) to generate our RPMs and improve the quality of our packages. Actually, we are facing a problem: How can we test a stable ISO like people do in bodhi? With metrics and documentation. Do you know any opensource tool to do that? Am I in the right channel to ask this question too? Thanks. -- Julio Cesar Faracco