Wireshark plugin updates (#1606)
Wireshark plugin updates (#1606)

- Add Trace Route and Record Path SCMP types .
- Fix AS format display by making the field a string.
  Display filter example for packets with destination AS 'ffaa:0:4':
  'scion.addr.dst_as == "ffaa:0:4"'
netsec-ethz/scion,Oncilla/scion,klausman/scion,netsec-ethz/scion,klausman/scion,netsec-ethz/scion,Oncilla/scion,klausman/scion,netsec-ethz/scion,Oncilla/scion,Oncilla/scion,klausman/scion,klausman/scion