Add authorization header in node-proxy.

node-proxy/lib/proxy/ProxyServer.js

@@ -478,6 +478,10 @@ function finish_websocket(upg_reqhost, proxy_server, ws) {
   if (upgrade_req.headers["origin"]) {
     zheaders.headers["Origin"] = upgrade_req.headers["origin"];
   }
+
+  if (upgrade_req.headers["authorization"]) {
+    zheaders.headers["Authorization"] = upgrade_req.headers["authorization"];
+  }
 
   /*  Create a proxy websocket request we need to send.  */
   var proxy_ws = new WebSocket('ws://' + ws_endpoint + upg_requri, zheaders);