tools: switch to v2::Validator in nfdc

"nfdid" field in 'nfdc status show' command is temporarily unavailable
because NfdIdCollector relies on v1 Validator. It will be re-implemented
in a future commit.

refs #4089

Change-Id: I21feae43055a17438d8bd3c0439ae4e0a2d5d14c
diff --git a/tools/nfdc/status-report.hpp b/tools/nfdc/status-report.hpp
index 153751a..1658852 100644
--- a/tools/nfdc/status-report.hpp
+++ b/tools/nfdc/status-report.hpp
@@ -1,5 +1,5 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
+/*
  * Copyright (c) 2014-2017,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
@@ -27,6 +27,9 @@
 #define NFD_TOOLS_NFDC_STATUS_REPORT_HPP
 
 #include "module.hpp"
+#include <ndn-cxx/face.hpp>
+#include <ndn-cxx/security/key-chain.hpp>
+#include <ndn-cxx/security/v2/validator.hpp>
 
 namespace nfd {
 namespace tools {
@@ -34,7 +37,7 @@
 
 using ndn::Face;
 using ndn::KeyChain;
-using ndn::Validator;
+using ndn::security::v2::Validator;
 
 enum class ReportFormat {
   XML = 1,