Vendor the external cookbooks

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

cookbooks/chef-sugar/recipes/default.rb

@@ -0,0 +1,34 @@
+#
+# Cookbook Name:: chef-sugar
+# Recipe:: default
+#
+# Copyright 2013-2015, Seth Vargo <sethvargo@gmail.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+gem_version = run_context.cookbook_collection[cookbook_name].metadata.version
+
+if Chef::Resource::ChefGem.instance_methods(false).include?(:compile_time)
+  chef_gem 'chef-sugar' do
+    version gem_version
+    compile_time true
+  end
+else
+  chef_gem 'chef-sugar' do
+    version gem_version
+    action :nothing
+  end.run_action(:install)
+end
+
+require 'chef/sugar'