Adding kitchen and chefspec and fixing package noop

[winmillwill]

I was getting an error where the php-fpm package ended up being '' (the empty string) because the test to set it in the recipe uses nil? and playing with irb will show you:

''.nil?
# false
''.empty?
# true

if you doubt the changes, you need only revert the change to the attributes file and try using rspec or kitchen.

[yevgenko]

👍 Thank you! Test suites is something that every project must have this days.
Please see my comment on the code, and I'm looking forward to get it merged ASAP :)

[winmillwill]

knife-ec2 conflicted with kitchen and I figured people were using omnibus chef now, and .ruby_version just annoyed me, but I've switched to chruby now, so no big deal. Also, kitchen is in chefdk. To be honest, I just wanted to see if anyone would notice.