tls: prefer path over port in connect

Makes tls.connect() behave as documented, preferring options.path over
options.port. This makes it consistent with net.connect(), so the
included test demonstrates that both behave in this way.

Also, for consistency, noting the precedence of options.path in net
doc.

PR-URL: https://github.com/nodejs/node/pull/14564


Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>