Fixed gate by Updating Gemfile to pin Rake to 10.1.1

The latest Rake update requires Ruby >= 1.9. Bundler in the
current gate uses 1.8.x. This update fixes the gate by pinning
Rake to the last known working version.

Change-Id: Ic0338578860a069c1cab86b94e7aac2049dd88dd

Author: Chris Hoge

Gemfile

@@ -3,6 +3,7 @@ source 'https://rubygems.org'
 group :development, :test do
   gem 'puppetlabs_spec_helper', :require => false
   gem 'puppet-lint', '~> 0.3.2'
+  gem 'rake', '10.1.1'
 end
 
 if puppetversion = ENV['PUPPET_GEM_VERSION']