Add hash example for defining cloud_init config on usage page
Add hash example for defining cloud_init config on usage page

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