repeated alarm message suppression

dist/log.js

@@ -30,7 +30,7 @@ function setLevel(value) {
     }
 }
 exports.setLevel = setLevel;
-function sendAlarmMail(message) {
+function sendAlarmMail(subject, message) {
     let transport = nodemailer.createTransport({
         host: config.dict.smtpHost,
         port: config.dict.smtpPort,
@@ -42,12 +42,12 @@ function sendAlarmMail(message) {
     let mail = {
         from: config.dict.smtpSender,
         to: config.dict.smtpReceiver,
-        subject: "Alarm from Dispatcher",
+        subject: subject,
         text: message
     };
     transport.sendMail(mail)
         .then((v) => {
-        info(`Alarm mail sent, ${message}, ${v.response}`);
+        info(`Mail sent, ${subject}, ${message}, ${v.response}`);
     })
         .catch((reason) => {
         error(`Failure when sending alarm mail: ${message}, ${reason}`);