Enable TCP socket in Pulseaudio daemon before starting up session sound

Migrated from https://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=324

Package: python-x2go Severity: wishlist

Enable TCP socket in PulseAudio before starting a session (that
requests pulse support). See below.

pacmd load-module module-native-protocol-tcp listen=0.0.0.0

For X2Go, it is sufficient to make pulseaudio listen on 127.0.0.1. The
internal (tunneled) communication in X2Go is forced to IPv4, so no
need to listen on [::1], the IPv4 localhost address should be just fine.

Mike