Update the rights to the log file

src/metrics-alerting/log.go

 	var disableColors = false
 
 	if len(*logFile) > 0 {
-		f, err := os.OpenFile(*logFile, os.O_WRONLY|os.O_CREATE, 0755)
+		f, err := os.OpenFile(*logFile, os.O_WRONLY|os.O_CREATE, 0655)
 		if err != nil {
 			return err
 		}