Consolidate Tests and Update Rakefile

Bundle exec rake default was not completing successfully. I removed
Debian from .kitchen.yml, since it was causing TK to fail. We can add it
back in later if necessary. I deleted the spec directory and created one
called test, and subdirectories for serverspec and chefspec. Finally, I
created chefspec tests for public_info.rb since I'm working on issue
Merge pull request #39 from rackops/fix_tests

Consolidate Tests and Update Rakefile