net/nfstrace: Add new port

nfstrace is an NFS and CIFS tracing/monitoring/capturing/analyzing tool.

It performs live Ethernet 1 Gbps - 10 Gbps packets capturing and helps
to determine NFS/CIFS procedures in raw network traffic. Furthermore, it
performs filtration, dumping, compression, statistical analysis,
visualization and provides the API for custom pluggable analysis
modules.

WWW: https://github.com/epam/nfstrace