Using pcaps from https://interop.seemann.io/ as samples for QUIC protocol
data didn't produce a conn.log for the contained data. `tcpdump -r`
and Wireshark do show the contained IP/UDP packets. Teach Zeek how
to handle link type DLT_PPP 0x09 using a new PPP analyzer based on the
PPPSerial analyzer code.
Usual update to files/x509 baseline after adding new analyzer due
to enum values changing.
These allow packet analyzers to register ports as identifiers to forward from
parent analyzers, while also adding those ports to the now-global
Analyzer::ports table at the same time.
This is WIP: The test case would require a new pcap or the possibility
to overwrite analyzer mappings. The CustomEncapsulationSkip method and
the corresponding options need to be removed.
