gof3r/options.go
func ACL(h http.Header, acl string) http.Header {
	if acl != "" {
		h.Set("x-amz-acl", acl)
	}
	return h
}
func ACL(h http.Header, acl string) http.Header {
	if acl != "" {
		h.Set("x-amz-acl", acl)
	}
	return h
}
// add canned acl to http.Header