TEST: Add test for the protection information setting in READCAPACITY16

If the device does not support PI (INQ->PROTECT) then
verify that PROT_EN, P_TYPE and P_I_EXP are all zero.

If the device does support PI and IF PROT_EN is clear
then verify that both P_TYPE and P_I_EXP are zero.

If the device does support PI and IF PROT_EN is set
then verify that P_TYPE is 0, 1 or 2