Update the NDNCERT library to version NDNCERT v2

spec:[https://github.com/named-data/ndncert/wiki/NDNCERT-Protocol-new]

Change-Id: Ia480a8e70c4b38ca170dfe2fcf50d1265ab65f46
diff --git a/tests/main.cpp b/tests/main.cpp
index d6380c6..96026e9 100644
--- a/tests/main.cpp
+++ b/tests/main.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2014-2017, Regents of the University of California,
+ * Copyright (c) 2014-2019, Regents of the University of California,
  *                          Arizona Board of Regents,
  *                          Colorado State University,
  *                          University Pierre & Marie Curie, Sorbonne University,
@@ -114,4 +114,4 @@
   return ::boost::unit_test::unit_test_main(&init_tests, argc, argv);
 }
 
-#endif // BOOST_VERSION >= 106200
+#endif // BOOST_VERSION >= 106200
\ No newline at end of file