bugfix: rest outdial issue caused by req.srf not properly set

lib/http-routes/api/create-call.js

@@ -122,6 +122,7 @@ router.post('/', async(req, res) => {
             res.status(500).send('Call Failure');
             return;
           }
+          inviteReq.srf = srf;
           /* ok our outbound INVITE is in flight */
 
           const tasks = [restDial];