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/module.hpp b/tools/nfdc/module.hpp
index 553c14f..765e39b 100644
--- a/tools/nfdc/module.hpp
+++ b/tools/nfdc/module.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2014-2016,  Regents of the University of California,
+/*
+ * Copyright (c) 2014-2017,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -27,14 +27,15 @@
 #define NFD_TOOLS_NFDC_MODULE_HPP
 
 #include "core/common.hpp"
+#include <ndn-cxx/mgmt/nfd/command-options.hpp>
 #include <ndn-cxx/mgmt/nfd/controller.hpp>
 
 namespace nfd {
 namespace tools {
 namespace nfdc {
 
-using ndn::nfd::Controller;
 using ndn::nfd::CommandOptions;
+using ndn::nfd::Controller;
 
 /** \brief provides access to an NFD management module
  *  \note This type is an interface. It should not have member fields.