Implement Network latency test
Implement using the scapy test template the network latency test that is specified here:
https://trac.torproject.org/projects/tor/wiki/doc/OONI/Tests/Networklatency
Implement using the scapy test template the network latency test that is specified here:
https://trac.torproject.org/projects/tor/wiki/doc/OONI/Tests/Networklatency