Use HexFormat to print out byte[] properties

Use HexFormat to print out byte[] properties

HexFormat.of().formatHex(byte[] arr)
 - transform byte array to hex formated string,

For comparison array formated with Arrays.toString()
[-32,79,-48,32,-22,58,105,16,-94,-40,8,0,43,48,48,-99],
with formatHex() it is string "e04fd020ea3a6910a2d808002b30309d".

The main difference is that array formatted with formatHex()
does not contain signed values, what was a condition
in the task description.

The test was required to be changed as well because it was
dependent on Arrays.toString() method.

JIRA: MDSAL-692
Change-Id: Ica9e399d61d54ac19369d3b2a9f60c9690b44128
Signed-off-by: ivan.martiniak <ivan.martiniak@pantheon.tech>