2dc4154724
For whatever reason, RHEL identifies itself with DISTRO "rhel" for 6 and "rhel7" for 7, but centos just uses "centos" and DIB_RELEASE. So this was wrong and installing EPEL6 on centos7. But we can simplify it completely for centos because that comes with the epel-release package already included. Change-Id: I2b8f5d30b850fef46b4a5ba32a917abcbf25932c