Implemented set to monitor pending interests in manager.

Change-Id: I4a11db79053e69a19ceba0e0501b93911131d1d7
diff --git a/src/util/logging.hpp b/src/util/logging.hpp
index bb926a4..e07626d 100644
--- a/src/util/logging.hpp
+++ b/src/util/logging.hpp
@@ -28,7 +28,7 @@
 #include <boost/log/sources/severity_logger.hpp>
 #include <boost/log/trivial.hpp>
 
-enum { SEVERITY_THRESHOLD = boost::log::trivial::warning };
+enum { SEVERITY_THRESHOLD = boost::log::trivial::trace };
 
 // register a global logger
 BOOST_LOG_INLINE_GLOBAL_LOGGER_DEFAULT(logger, boost::log::sources::severity_logger_mt<boost::log::trivial::severity_level>)