func (c *Cluster) CertUpdate(fingerprint string, certName string, certType int) error {
	err := c.Transaction(func(tx *ClusterTx) error {
		_, err := tx.tx.Exec("UPDATE certificates SET name=?, type=? WHERE fingerprint=?", certName, certType, fingerprint)
		return err
	})
	return err
}
func (c *Cluster) CertUpdate(fingerprint string, certName string, certType int) error {
	err := c.Transaction(func(tx *ClusterTx) error {
		_, err := tx.tx.Exec("UPDATE certificates SET name=?, type=? WHERE fingerprint=?", certName, certType, fingerprint)
		return err
	})
	return err
}
// CertUpdate updates the certificate with the given fingerprint.