Fix MQTT password do not save

server/server.js

@@ -721,6 +721,7 @@ try {
                 bean.pushToken = monitor.pushToken;
                 bean.proxyId = Number.isInteger(monitor.proxyId) ? monitor.proxyId : null;
                 bean.mqttUsername = monitor.mqttUsername;
+                bean.mqttPassword = monitor.mqttPassword;
                 bean.mqttTopic = monitor.mqttTopic;
                 bean.mqttSuccessMessage = monitor.mqttSuccessMessage;