Push the declartion of persist_config flag

src/os_sensor_nodelet.h

@@ -138,6 +138,7 @@ class OusterSensor : public OusterSensorNodeletBase {
     std::atomic<bool> lidar_packets_processing_thread_active = {false};
     std::unique_ptr<std::thread> lidar_packets_processing_thread;
 
+    bool persist_config = false;
     bool force_sensor_reinit = false;
     bool reset_last_init_id = true;