Merge pull request #3 from weshayutin/merge1202

Packstack: updates for packstack install
Packstack: updates for packstack install

- created default vars for rhel and epel repo
- updated rhel and epel files to be templates
- added handler path to packstack-installer role
Merge branch 'merge1202' of github.com:weshayutin/khaleesi into merge1202