Change #include style

Header files are now always included with their path from the
project's root directory rather than the path relative to
the includer.

Change-Id: If39b8510eef8da00baf5fe88337c45dbdf8c766e
Refs: #3084
diff --git a/tests/unit/net/collect-netifs.hpp b/tests/unit/net/collect-netifs.hpp
index 322e323..b941abf 100644
--- a/tests/unit/net/collect-netifs.hpp
+++ b/tests/unit/net/collect-netifs.hpp
@@ -25,11 +25,10 @@
  * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
  */
 
-#ifndef NFD_TESTS_UNIT_TESTS_NET_COLLECT_NETIFS_HPP
-#define NFD_TESTS_UNIT_TESTS_NET_COLLECT_NETIFS_HPP
+#ifndef NDN_TESTS_UNIT_NET_COLLECT_NETIFS_HPP
+#define NDN_TESTS_UNIT_NET_COLLECT_NETIFS_HPP
 
-#include "common.hpp"
-#include "net/network-interface.hpp"
+#include "ndn-cxx/net/network-interface.hpp"
 
 #include <vector>
 
@@ -49,4 +48,4 @@
 } // namespace net
 } // namespace ndn
 
-#endif // NFD_TESTS_UNIT_TESTS_NET_COLLECT_NETIFS_HPP
+#endif // NDN_TESTS_UNIT_NET_COLLECT_NETIFS_HPP