Vendor the external cookbooks

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

cookbooks/java/recipes/homebrew.rb

@@ -0,0 +1,8 @@
+include_recipe 'homebrew'
+include_recipe 'homebrew::cask'
+include_recipe 'java::notify'
+
+homebrew_tap 'caskroom/versions'
+homebrew_cask "java#{node['java']['jdk_version']}" do
+  notifies :write, 'log[jdk-version-changed]', :immediately
+end