Merge pull request puppetlabs#496 from apenney/fix-up-gemfile

Allow rspec-beaker to update.

Author: Ashley Penney

Gemfile

@@ -2,7 +2,6 @@ source ENV['GEM_SOURCE'] || 'https://rubygems.org'
 
 group :development, :test do
   gem 'mime-types', '<2.0',      :require => false
-  gem 'rake',  '10.1.1',         :require => false
   gem 'rspec-puppet',            :require => false
   gem 'puppetlabs_spec_helper',  :require => false
   gem 'serverspec',              :require => false