Printout number of recoveries.

coupler/opc-ua-server/keep_alive_subscriber.h

@@ -315,7 +315,8 @@ void callbackCheckHeartBeat() {
           }
           else if (CURRENT_STATE == STATE_DOWN) {
             // initial keep alive received, printout
-            UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_USERLAND, "UP (recovered): %s", coupler_id_str);
+            UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_USERLAND, 
+                        "UP (recovered %d times): %s", SAFE_MODE_STATE_COUNTER, coupler_id_str);
           }
           CURRENT_STATE = STATE_UP;
         }