tests: revamp Face integrated tests

* Categorize tests into consumer, producer, IO routines.
* Split expressInterest tests.
* Add route toward null face when Interest timeout is expected.
* Merge similar setInterestFilter tests.
* Add test for oversized Data.
* Move InterestFilter-convert-to-Name test into unit tests.

refs #4031

Change-Id: I3356ae7fc9eec942ec7f2fb8b2277fa039464750
diff --git a/tests/unit-tests/util/segment-fetcher.t.cpp b/tests/unit-tests/util/segment-fetcher.t.cpp
index 09eb212..d80f1ae 100644
--- a/tests/unit-tests/util/segment-fetcher.t.cpp
+++ b/tests/unit-tests/util/segment-fetcher.t.cpp
@@ -20,15 +20,15 @@
  */
 
 #include "util/segment-fetcher.hpp"
-#include "lp/nack-header.hpp"
 #include "data.hpp"
 #include "encoding/block.hpp"
+#include "lp/nack-header.hpp"
+#include "util/dummy-client-face.hpp"
 
 #include "boost-test.hpp"
-#include "util/dummy-client-face.hpp"
+#include "dummy-validator.hpp"
+#include "make-interest-data.hpp"
 #include "../identity-management-time-fixture.hpp"
-#include "../make-interest-data.hpp"
-#include "../../dummy-validator.hpp"
 
 namespace ndn {
 namespace util {