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

Change-Id: I3d47076504950e67746174623c75383948e9d93d
diff --git a/tests/test-encode-decode-certificate.cpp b/tests/test-encode-decode-certificate.cpp
index 8da32bb..8a66d41 100644
--- a/tests/test-encode-decode-certificate.cpp
+++ b/tests/test-encode-decode-certificate.cpp
@@ -5,8 +5,8 @@
 
 #include <boost/test/unit_test.hpp>
 
-#include <ndn-cpp-dev/security/certificate.hpp>
-#include <ndn-cpp-dev/security/public-key.hpp>
+#include "security/certificate.hpp"
+#include "security/public-key.hpp"
 
 #if __clang__
 #pragma clang diagnostic push