omit the origin header when connecting the websocket

[sixcorners]

Setting remote-allow-origins sucks. If you set it to * I think that is very insecure. Selenium doesn't need this. The way to not have to set it is to not send the origin header.

// pass this to .connectToServer()
ClientEndpointConfig.Builder.create()
  .configurator(
      new ClientEndpointConfig.Configurator() {
        @Override
        public void beforeRequest(Map<String, List<String>> headers) {
          headers.remove("Origin");
        }
      })
  .build()