Merge pull request #4 from patrixl/beta-v2

CentOS 7.0 x86_64
Update JSON os_list for CentOS 7
Fix install path for CentOS 7
CentOS 7 kickstart 'zerombr' doesn't take an argument
Update Chef and Ansible bootstrap scripts to install on CentOS 7
Merge remote-tracking branch 'unscramble/beta-v2' into beta-v2