provider/designate.go
func canonicalizeDomainName(d string) string {
	if !strings.HasSuffix(d, ".") {
		d += "."
	}
	return strings.ToLower(d)
}
func canonicalizeDomainName(d string) string {
	if !strings.HasSuffix(d, ".") {
		d += "."
	}
	return strings.ToLower(d)
}
// converts domain name to FQDN