add modified copy of utility files from develop

package kinetic

import (

	"fmt"

	"io"

	"io/ioutil"

	"os"

)

// UpdateFirmware is the utility function to update drive firmware.

// conn is BlockConnection to drive, and file is the full path to the firmware file.

func UpdateFirmware(conn *BlockConnection, file string) error {

	_, err := os.Stat(file)

	if err != nil {

		if os.IsNotExist(err) {

			klog.Errorf("Update firmware fail, file %s not exist", file)

		}

		return err

	}

	data, err := ioutil.ReadFile(file)

	if err != nil {

		klog.Errorf("Update firmware fail, file %s can't read", file)

		return err

	}

	status, err := conn.UpdateFirmware(data)

	if err != nil || status.Code != OK {

		klog.Errorf("Update firmware fail : %s\n", status.Error())

	}

	return err

}

package kinetic

import (

	"testing"

)

func TestUpdateFirmware(t *testing.T) {

	// file not exist, expected to fail

	file := "not/exist/firmare/unknown-version.slod"

	err := UpdateFirmware(blockConn, file)

	if err != nil {

		t.Fatal("Firmware update fail: ", file)

	}

}