func ConfigGetString(cluster *db.Cluster, key string) (string, error) {
	config, err := configGet(cluster)
	if err != nil {
		return "", err
	}
	return config.m.GetString(key), nil
}
func ConfigGetString(cluster *db.Cluster, key string) (string, error) {
	config, err := configGet(cluster)
	if err != nil {
		return "", err
	}
	return config.m.GetString(key), nil
}
// ConfigGetString is a convenience for loading the cluster configuration and
// returning the value of a particular key.
//
// It's a deprecated API meant to be used by call sites that are not
// interacting with the database in a transactional way.