Use construct for EF_AD in pySim-{shell, prog, read}.py, cards.py

Also serves as example for RFU (reserved for future use) fields
which should not always be reset to zero in case they have been
set on the uSIM for some reason.
See pySim/ts_51_011.py, class EF_AD.

* Add definitions for RFU {Flag, Bits, Byte, Bytes}
* Use IntEnum for OP_MODE (convenient auto completion)
* Remove obsolete definitions and imports
* Update test results for all SIMs (opmode strings are shortened)

Change-Id: I65e0a426f80a619fec38856a30e590f0e726b554

pySim-prog.py

@@ -146,7 +146,7 @@ def parse_options():
 	parser.add_option("--opmode", dest="opmode", type="choice",
 			help="Set UE Operation Mode in EF.AD (Administrative Data)",
 			default=None,
-			choices=['{:02X}'.format(m) for m in list(EF_AD.OP_MODE.keys())],
+			choices=['{:02X}'.format(int(m)) for m in EF_AD.OP_MODE],
 		)
 	parser.add_option("--epdgid", dest="epdgid",
 			help="Set Home Evolved Packet Data Gateway (ePDG) Identifier. (Only FQDN format supported)",