moving validator files to new validator folder.

This folder will be used for all validator-related codes,
e.g. following ndns fetcher.

Change-Id: Ibdb5f35e80d914fa960edaeff7e12dd0942667b5
diff --git a/tests/unit/database-test-data.hpp b/tests/unit/database-test-data.hpp
index 5091dd7..0db768c 100644
--- a/tests/unit/database-test-data.hpp
+++ b/tests/unit/database-test-data.hpp
@@ -23,7 +23,7 @@
 #include "daemon/db-mgr.hpp"
 #include "clients/response.hpp"
 #include "clients/query.hpp"
-#include "validator.hpp"
+#include "validator/validator.hpp"
 
 #include "test-common.hpp"