err = signRequestV4(req, cred.AccessKey, cred.SecretKey)
	if err != nil {
		return nil, err
	}
	return req, nil
}

// testServicesCmdHandler - parametrizes service subcommand tests on
// cmdType value.
func testServicesCmdHandler(cmd cmdType, t *testing.T) {
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()