Add packet show command and TODO.
Add packet show command and TODO.

Illinois-tech-ITM/BSMP-2016-ISCSI-Packet-Injection,illinoistech-itm/pykkon,Illinois-tech-ITM/BSMP-2016-ISCSI-Packet-Injection,Illinois-tech-ITM/BSMP-2016-ISCSI-Packet-Injection,illinoistech-itm/pykkon,illinoistech-itm/pykkon