Cleanup inconsistencies in Ubuntu templates.

* Build all templates non-headless so we can see error output
* Remove extraneous provisioner
Merge pull request #206 from juliandunn/cleanup-ubuntu-templates

Cleanup inconsistencies in Ubuntu templates.
Add links to new ubuntu images
Merge pull request #209 from Maks3w/patch-1

Add links to new ubuntu images
Support Red Hat Enterprise Linux 7 Release Candidate.
Fix company name in README
Update to OmniOS r151008t
primitive script to install current puppet version
added debian-6.0.8-amd64-puppet
added debian-7.2.0-amd64-puppet
added debian-7.3.0-amd64-puppet
Script to install mptcp capable kernel from multipath-tcp.org repo
added debian-7.3.0-amd64_mptcp-puppet
added ubuntu-12.04-amd64-puppet
added ubuntu-12.04-amd64_mptcp-puppet
New templates for puppetized Trusty boxes
Puppetize Trusty templates
Make sure puppet agent is enabled