Remove extra provider_config option
Remove extra provider_config option

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