Add pythonshare online test
Add pythonshare online test

Use https://hub.docker.com/r/askervin/pythonshare-server to provide
an pythonshare hub.

Install pythonshare package.
Test that pythonshare-client
can connect to hub and list connected clients.

01org/fMBT,01org/fMBT,mixu-/fMBT,01org/fMBT,01org/fMBT,mixu-/fMBT,mixu-/fMBT,mixu-/fMBT,01org/fMBT,mixu-/fMBT