fix in rndc config and newline in yadyn logging

bind/named.conf.rndc

@@ -1,6 +1,6 @@
 key "rndc-key" {
       algorithm hmac-md5;
-      secret "$RNDCKEY";
+      secret "RNDCKEY";
 };
 
 controls {

server/logger.py

@@ -1,17 +1,18 @@
 import sys
+import datetime
 
 
 class Logger(object):
     @staticmethod
     def log(data):
         with open(Logger.filename, 'a') as f:
-            f.write(data)
+            f.write(datetime.datetime.now().isoformat() + ' ' + data + "\n")
     
     @staticmethod
     def debug(data):
         if Logger.debugFlag:
             with open(Logger.filename, 'a') as f:
-		f.write(data)
+                f.write(datetime.datetime.now().isoformat() + ' ' + data + "\n")
 
     @staticmethod
     def openlog(filename):