Fix the browsper tests so it handles the fact that a server listens on both tcp and ws.
Fix the browsper tests so it handles the fact that a server listens on
both tcp and ws.

Change-Id: I209c651eac7c269db51b50c624f9a8162e33e362

vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref