GoogleCloudPlatform/compute-image-packages — pull request #95 by Sarsate (2014-07-10 21:04:44+00:00)
Title: Modifies regex to correctly recognize centos-7.

CentOS 7's /etc/redhat-release outputs:
CentOS Linux release 7.0.1406 (Core)

This modifies the regex to parse this format in addition to the previous
centos-6 format.