Merge pull request #2 from GregSutcliffe/master

Daemon option for tftp
Added support for Ubuntu (from article at http://www.cloudcomp.ch/2012/06/automating-the-icclab-part-one/)
Added support for ubuntu
Merge pull request #3 from dizz/patch-1

Added support for Ubuntu
Merge pull request #4 from dizz/patch-2

Added support for ubuntu
puppet-lint fixes
Add class relationships to tftp and lint-check
Fix TFTP location on newer RHEL/Fedora releases
fixes #2342 converting to ::osfamily to support redhat based distros
Changes to switch to the puppetlabs-xinetd module.
Add Modulefile and pre-reqs for Puppet Forge