Adding full rules support for RHEL

This should add proper detection of the audit version when copying the default rules. 

I did find an oddity when testing against CentOS 6.5 where the audit package was already installed but no rules files existed. Doing `yum reinstall audit` took care of the issue and allowed for a successful run, so I'm just going to write that off as an issue with the vagrant image. On CentOS 6.4, auditd is not preinstalled.