Vendor the external cookbooks

Knife-Zero doesn't include Berkshelf support, so vendoring everything in
the repo is convenient again

cookbooks/mediawiki/Thorfile

@@ -0,0 +1,12 @@
+# encoding: utf-8
+
+require 'bundler'
+require 'bundler/setup'
+require 'berkshelf/thor'
+
+begin
+  require 'kitchen/thor_tasks'
+  Kitchen::ThorTasks.new
+rescue LoadError
+  puts ">>>>> Kitchen gem not loaded, omitting tasks" unless ENV['CI']
+end