func (c *Cluster) ImageAliasUpdate(id int, imageID int, desc string) error {
	stmt := `UPDATE images_aliases SET image_id=?, description=? WHERE id=?`
	err := exec(c.db, stmt, imageID, desc, id)
	return err
}
func (c *Cluster) ImageAliasUpdate(id int, imageID int, desc string) error {
	stmt := `UPDATE images_aliases SET image_id=?, description=? WHERE id=?`
	err := exec(c.db, stmt, imageID, desc, id)
	return err
}
// ImageAliasUpdate updates the alias with the given ID.