Audit tests for `package` DSL duplication

After @mcquin's changes in mcquin/controls_group_object all of the audit tests I added here work except for 1 - the final one.

ping @opscode/client-engineers 
As this TODO says, this test is currently failing.  I don't know if I will actually be able to get it to pass.  For it to pass, the Serverspec helper methods would have to only be extended inside the `controls` block.