- Makes websocket server listen on all interfaces (0.0.0.0) - this made tests pass locally on the emulator.
- Pass 127.0.0.1 as the websocketserver address in the ssltunnel config. This makes rewriting the address work
- Remaining tests are using HTTPS/WSS and they're failing probably due to a bug in ssltunnel
Differential Revision: https://phabricator.services.mozilla.com/D194908