tests: refactor common test infrastructure and fixtures

Change-Id: I597c11130eefa2cc2846ee6655c85dc04f2f22ef
diff --git a/tests/unit/security/certificate-bundle-fetcher.t.cpp b/tests/unit/security/certificate-bundle-fetcher.t.cpp
index 1d0cee9..0c300b7 100644
--- a/tests/unit/security/certificate-bundle-fetcher.t.cpp
+++ b/tests/unit/security/certificate-bundle-fetcher.t.cpp
@@ -23,8 +23,7 @@
 #include "ndn-cxx/security/validation-policy-simple-hierarchy.hpp"
 #include "ndn-cxx/util/regex/regex-pattern-list-matcher.hpp"
 
-#include "tests/boost-test.hpp"
-#include "tests/make-interest-data.hpp"
+#include "tests/test-common.hpp"
 #include "tests/unit/security/validator-fixture.hpp"
 
 namespace ndn {