AccessRuleMaster: use contants for the command bytesThe command bytes (0xF0, b0xF1, 0xF2) only appear as magic numbersin the code. Let's use constants, so that it is clear what thosebytes mean and where they come from.Related: SYS#7245Change-Id: Ia3ccb511886b7da9a3a8e4ab7c89af3ab99c0abf