security: stop installing headers of concrete PIB, TPM, and KeyHandle implementations

Refs: #4782
Change-Id: I23bb75c485034140f29b10bd3a103f4aa480be4b
diff --git a/tests/unit/security/pib/pib-impl.t.cpp b/tests/unit/security/pib/pib-impl.t.cpp
index 2cbdc2f..500e5fd 100644
--- a/tests/unit/security/pib/pib-impl.t.cpp
+++ b/tests/unit/security/pib/pib-impl.t.cpp
@@ -19,8 +19,8 @@
  * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
  */
 
-#include "ndn-cxx/security/pib/pib-memory.hpp"
-#include "ndn-cxx/security/pib/pib-sqlite3.hpp"
+#include "ndn-cxx/security/pib/impl/pib-memory.hpp"
+#include "ndn-cxx/security/pib/impl/pib-sqlite3.hpp"
 #include "ndn-cxx/security/pib/pib.hpp"
 #include "ndn-cxx/security/security-common.hpp"