Update validation related codes to security v2

Change-Id: I5467b87092820666c04f22623f0f1665ce9a1194
diff --git a/tools/ndns-remove-rr.cpp b/tools/ndns-remove-rr.cpp
index d6159f6..fe4730c 100644
--- a/tools/ndns-remove-rr.cpp
+++ b/tools/ndns-remove-rr.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2014, Regents of the University of California.
+/*
+ * Copyright (c) 2014-2017, Regents of the University of California.
  *
  * This file is part of NDNS (Named Data Networking Domain Name Service).
  * See AUTHORS.md for complete list of NDNS authors and contributors.
@@ -102,7 +102,7 @@
     Name label(rrLabelStr);
     name::Component type(rrTypeStr);
 
-    ndn::KeyChain keyChain;
+    KeyChain keyChain;
     ndn::ndns::ManagementTool tool(db, keyChain);
     tool.removeRrSet(zoneName, label, type);