Fixed dependencies

Author: Sliim

Gemfile

@@ -1,13 +1,13 @@
 source "https://rubygems.org"
 
 gem 'chef', '~> 11.12.2'
-gem 'berkshelf'
+gem 'berkshelf', '~> 2.0.16'
 
 group :integration do
+  gem 'strainer', '~> 3.4.0'
   gem 'test-kitchen', '~> 1.2.1'
   gem 'kitchen-vagrant'
   gem 'serverspec'
   gem 'rspec'
-  gem 'strainer'
   gem 'foodcritic'
 end