locking down regular expression and simplifying include_test logic
locking down regular expression and simplifying include_test logic

juliandunn/opscode-omnitruck,chef/omnitruck,chef/opscode-omnitruck,glennmatthews/opscode-omnitruck,glennmatthews/opscode-omnitruck,juliandunn/opscode-omnitruck,glennmatthews/opscode-omnitruck,juliandunn/opscode-omnitruck,rhass/opscode-omnitruck,rhass/opscode-omnitruck,rhass/opscode-omnitruck,chef/opscode-omnitruck,chef/omnitruck,chef/opscode-omnitruck,chef/omnitruck