Rename test_pyx to _test_pyx to "hide" it

Fixes for Python 3

[Networking/coverage] Fix sndrcvflood methods

Apply IPYTHON conf.prompt

[logging] Fix logging params

[coverage] Scapy version

Allow filters in the Packet slice / .getlayer() API

Better default for TLS ClientHello

With a packet `pkt = IP() / IP(ttl=3) / IP()`, this will allow:

  - pkt.getlayer(IP, ttl=3)
  - pkt[IP, {"ttl": 3}]

This is particularly useful with Dot11Elt() layers, when you want a
specific value (the SSID or supported rates for example).

* Add more scapypipes tests
* Daemonize threads, better UTscapy closing
* Fix TCPConnectPipe

Python 3: multiple fixes

[coverage] plist on python 3