[1175] add -v option in pycoverage for debugging the failure in

buildbot. (unittest.main() with verbosity option is not supported
in Python3.1.)

src/bin/stats/tests/Makefile.am

@@ -23,7 +23,7 @@ endif
 	PYTHONPATH=$(COMMON_PYTHON_PATH):$(abs_top_builddir)/src/bin/stats:$(abs_top_builddir)/src/bin/stats/tests:$(abs_top_builddir)/src/bin/msgq:$(abs_top_builddir)/src/lib/python/isc/config \
 	B10_FROM_SOURCE=$(abs_top_srcdir) \
 	CONFIG_TESTDATA_PATH=$(abs_top_srcdir)/src/lib/config/tests/testdata \
-	$(PYCOVERAGE_RUN) $(abs_srcdir)/$$pytest || exit ; \
+	$(PYCOVERAGE_RUN) $(abs_srcdir)/$$pytest -v || exit ; \
 	done
 
 CLEANDIRS = __pycache__

src/bin/stats/tests/b10-stats-httpd_test.py

@@ -703,4 +703,4 @@ class TestStatsHttpd(unittest.TestCase):
             imp.reload(stats_httpd)
 
 if __name__ == "__main__":
-    unittest.main(verbosity=2)
+    unittest.main()

src/bin/stats/tests/b10-stats_test.py

@@ -603,7 +603,7 @@ class TestOSEnv(unittest.TestCase):
         imp.reload(stats)
 
 def test_main():
-    unittest.main(verbosity=2)
+    unittest.main()
 
 if __name__ == "__main__":
     test_main()