message: Fix ports usage in agent integration tests.
diff: @@ -107,7 +107,7 @@ mod high_cases {
  let (did, ver_key, pub_key) = SignusUtils::create_and_store_my_did(wallet_handle, Some("sovrin_agent_connect_works_for_a")).unwrap();
  - SignusUtils::store_their_did_from_parts(wallet_handle, did.as_str(), pub_key.as_str(), ver_key.as_str(), "127.0.0.1:9701").unwrap();
  + SignusUtils::store_their_did_from_parts(wallet_handle, did.as_str(), pub_key.as_str(), ver_key.as_str(), "127.0.0.1:9700").unwrap();
  //FIXME temporary code: replace by indy_agent_listen
  thread::spawn(move || {
  @@ -116,7 +116,7 @@ mod high_cases {
  let socket: zmq::Socket = zmq::Context::new().socket(zmq::SocketType::ROUTER).unwrap();
  socket.set_curve_server(true).unwrap();
  socket.add_curve_keypair([public_key, secret_key].concat().as_slice()).unwrap();
  - socket.bind(format!("tcp://{}", "127.0.0.1:9701").as_str()).unwrap();
  + socket.bind(format!("tcp://{}", "127.0.0.1:9700").as_str()).unwrap();
  socket.poll(zmq::POLLIN, -1).unwrap();
  let identity = socket.recv_string(zmq::DONTWAIT).unwrap().unwrap();
  let msg = socket.recv_string(zmq::DONTWAIT).unwrap().unwrap();
  