tests: sync common testing infrastructure with ndn-cxx

Change-Id: I1e5cdcda8f6d3d9f9addc7a9f17359aedef9db7e
diff --git a/tests/main.cpp b/tests/main.cpp
index 011014d..912f0c3 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) 2014-2021,  Regents of the University of California,
+ * Copyright (c) 2014-2022,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -24,4 +24,4 @@
  */
 
 #define BOOST_TEST_MODULE NLSR
-#include "boost-test.hpp"
+#include "tests/boost-test.hpp"