message: Use new systems() in grpc_server
diff: @@ -48,45 +48,45 @@ namespace backend {
  class GRPCServer {
  public:
  - GRPCServer(Mavsdk& dc) :
  + GRPCServer(Mavsdk& mavsdk) :
  _port(0),
  - _dc(dc),
  - _core(_dc),
  - _action(_dc.system()),
  + _mavsdk(mavsdk),
  + _core(_mavsdk),
  + _action(_mavsdk.systems().at(0)),
  _action_service(_action),
  - _calibration(_dc.system()),
  + _calibration(_mavsdk.systems().at(0)),
  _calibration_service(_calibration),
  - _camera(_dc.system()),
  + _camera(_mavsdk.systems().at(0)),
  _camera_service(_camera),
  - _follow_me(_dc.system()),
  + _follow_me(_mavsdk.systems().at(0)),
  _follow_me_service(_follow_me),
  - _ftp(_dc.system()),
  + _ftp(_mavsdk.systems().at(0)),
  _ftp_service(_ftp),
  - _geofence(_dc.system()),
  + _geofence(_mavsdk.systems().at(0)),
  _geofence_service(_geofence),
  - _gimbal(_dc.system()),
  + _gimbal(_mavsdk.systems().at(0)),
  _gimbal_service(_gimbal),
  - _info(_dc.system()),
  + _info(_mavsdk.systems().at(0)),
  _info_service(_info),
  - _log_files(_dc.system()),
  + _log_files(_mavsdk.systems().at(0)),
  _log_files_service(_log_files),
  - _manual_control(_dc.system()),
  + _manual_control(_mavsdk.systems().at(0)),
  _manual_control_service(_manual_control),
  - _mission(_dc.system()),
  + _mission(_mavsdk.systems().at(0)),
  _mission_service(_mission),
  - _mission_raw(_dc.system()),
  + _mission_raw(_mavsdk.systems().at(0)),
  _mission_raw_service(_mission_raw),
  - _mocap(_dc.system()),
  + _mocap(_mavsdk.systems().at(0)),
  _mocap_service(_mocap),
  - _offboard(_dc.system()),
  + _offboard(_mavsdk.systems().at(0)),
  _offboard_service(_offboard),
  - _param(_dc.system()),
  + _param(_mavsdk.systems().at(0)),
  _param_service(_param),
  - _shell(_dc.system()),
  + _shell(_mavsdk.systems().at(0)),
  _shell_service(_shell),
  - _telemetry(_dc.system()),
  + _telemetry(_mavsdk.systems().at(0)),
  _telemetry_service(_telemetry),
  - _tune(_dc.system()),
  + _tune(_mavsdk.systems().at(0)),
  _tune_service(_tune)
  {}
  @@ -98,7 +98,7 @@ public:
  private:
  void setup_port(grpc::ServerBuilder& builder);
  - Mavsdk& _dc;
  + Mavsdk& _mavsdk;
  CoreServiceImpl<> _core;
  Action _action;
  ActionServiceImpl<> _action_service;
  