only retain global/version and global/running

src/ebusd/mqtthandler.cpp

@@ -485,8 +485,8 @@ void MqttHandler::run() {
 
   time(&now);
   start = lastTaskRun = now;
-  publishTopic(m_globalTopic+"version", PACKAGE_STRING "." REVISION);
-  publishTopic(m_globalTopic+"running", "true");
+  publishTopic(m_globalTopic+"version", PACKAGE_STRING "." REVISION, true);
+  publishTopic(m_globalTopic+"running", "true", true);
   publishTopic(signalTopic, "false");
   mosquitto_message_callback_set(m_mosquitto, on_message);
   string subTopic = getTopic(NULL, "#");

src/ebusd/mqtthandler.h

@@ -116,7 +116,7 @@ class MqttHandler : public DataSink, public DataSource, public Thread {
    * @param data the data string.
    * @param retain whether the topic shall be retained.
    */
-  void publishTopic(const string& topic, const string& data, bool retain = true);
+  void publishTopic(const string& topic, const string& data, bool retain = false);
 
   /** the @a MessageMap instance. */
   MessageMap* m_messages;