net: multiple listen() events fail silently

Problem:
It's possible to run listen()
  on a net.Server that's already listening to a port.
The result is silent failure,
  with the side effect of changing the connectionKey and or pipeName.

Solution:
  throw an error if listen method called more than once.
  close() method should be called between listen() method calls.

Refs: https://github.com/nodejs/node/pull/8294
Fixes: https://github.com/nodejs/node/issues/6190
Fixes: https://github.com/nodejs/node/issues/11685
PR-URL: https://github.com/nodejs/node/pull/13149


Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>