Merge pull request #7 from weshayutin/ansible_fedora

Ansible fedora
Merge pull request #8 from weshayutin/hello_world_up

Hello world ansible + openstack backend
Refactor directory layout
get_nodes defaults now uses variables for all params
Update readme to reflect need for path to ansible install
Add default for reboot_delay
Add rhel and fedora roles for foreman
Rename playpen to hacking. Fix yum update all
Shorten the delay to 10 seconds when waiting just for nodes