message: Create correct structure of SubscriveVehicleData Response
  Convert to string keys of already subscribed vehicle data
  Add data type of already subscribed vehicle data
diff: @@ -286,20 +286,33 @@ void SubscribeVehicleDataRequest::AddAlreadySubscribedVI(
  smart_objects::SmartObject& msg_params) const {
  LOG4CXX_AUTO_TRACE(logger_);
  using namespace mobile_apis;
  + auto vi_to_string =
  + [](const mobile_apis::VehicleDataType::eType vehicle_data) {
  + for (auto& vi_str_to_int_pair : MessageHelper::vehicle_data()) {
  + if (vehicle_data == vi_str_to_int_pair.second) {
  + return vi_str_to_int_pair.first;
  + }
  + }
  + return std::string();
  + };
  +
  VehicleInfoSubscriptions::const_iterator it_same_app =
  vi_already_subscribed_by_this_app_.begin();
  for (; vi_already_subscribed_by_this_app_.end() != it_same_app;
  ++it_same_app) {
  - msg_params[*it_same_app][strings::result_code] =
  + msg_params[vi_to_string(*it_same_app)][strings::result_code] =
  VehicleDataResultCode::VDRC_DATA_ALREADY_SUBSCRIBED;
  + msg_params[vi_to_string(*it_same_app)][strings::data_type] = *it_same_app;
  }
  VehicleInfoSubscriptions::const_iterator it_another_app =
  vi_already_subscribed_by_another_apps_.begin();
  for (; vi_already_subscribed_by_another_apps_.end() != it_another_app;
  ++it_another_app) {
  - msg_params[*it_another_app][strings::result_code] =
  + msg_params[vi_to_string(*it_another_app)][strings::result_code] =
  VehicleDataResultCode::VDRC_SUCCESS;
  + msg_params[vi_to_string(*it_another_app)][strings::data_type] =
  + *it_another_app;
  }
  }
  