Ensure block is properly passed through to add_config
Ensure block is properly passed through to add_config

marxarelli/vagrant,marxarelli/vagrant,chrisroberts/vagrant,mitchellh/vagrant,gitebra/vagrant,mitchellh/vagrant,chrisroberts/vagrant,gitebra/vagrant,mitchellh/vagrant,sni/vagrant,chrisroberts/vagrant,sni/vagrant,sni/vagrant,marxarelli/vagrant,gitebra/vagrant,mitchellh/vagrant,chrisroberts/vagrant,sni/vagrant,gitebra/vagrant,marxarelli/vagrant