reduce the pre-requirement for Openshift Install

Hello Communituy ,

Im going to be deploying a production Openshift soon , in the meantime I need to practice using ansible to install Openshift origin . The production verison will be all on REDHAT with Enterprise Origin . I need to reduce the memory requirement for test installs as the current minimal is 15 Gig , I would like to reduce for testing reasons and practice installs. Any Idea how I can do this ?