src: Another round of source updates: moving all headers close to implementation files

Change-Id: I3d47076504950e67746174623c75383948e9d93d
diff --git a/tests/test-faces.cpp b/tests/test-faces.cpp
index f43c71e..a8d6135 100644
--- a/tests/test-faces.cpp
+++ b/tests/test-faces.cpp
@@ -5,7 +5,7 @@
  */
 
 #include <boost/test/unit_test.hpp>
-#include <ndn-cpp-dev/face.hpp>
+#include "face.hpp"
 
 using namespace std;
 using namespace ndn;