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/wscript b/tests/wscript
index af4b422..0221a6e 100644
--- a/tests/wscript
+++ b/tests/wscript
@@ -13,10 +13,10 @@
         use='ndn-cxx BOOST',
         includes='.')
 
-    # core modules that can be shared between unit and integrated tests
+    # core objects that can be shared between unit and integrated tests
     bld(features="cxx",
         target="boost-tests-base",
-        source="identity-management-fixture.cpp",
+        source=bld.path.ant_glob(['*.cpp'], excl=['main.cpp']),
         use='ndn-cxx tests-base BOOST',
         includes='.',
         install_path=None)