fixes #7227 - use and require Ruby 1.9.3 from Brightbox Ruby NG PPA
refs #7227 - require Puppet 3.0.0 and Facter 1.6.12..2 builds on Ubuntu 12.04

When running Foreman or the Puppet master under Ubuntu 12.04 with the Brightbox
Ruby NG PPA, we need Puppet and Facter packaged under /usr/lib/ruby/vendor_ruby
rather than the 1.8-specific path so the 1.9 Ruby will still load them.

Distro packages and older Puppet Labs packages use the 1.8 path, which prevents
us loading these deps, so the newer packages are needed.