core: change logging from environment variable to configuration file-based

GlobalConfigurationFixture uses unit-tests.conf to determine default
and module specific logging levels. Logging will gracefully default to
INFO if unit-tests.conf is not found. See unit-tests.conf.sample for a
sample configuration file.

refs: #1375, #1267

Change-Id: Ib0c4eb4149748e6658f94ef1afa23ddd3072c0fa
diff --git a/daemon/mgmt/segment-publisher.cpp b/daemon/mgmt/segment-publisher.cpp
index 82ae31e..993330f 100644
--- a/daemon/mgmt/segment-publisher.cpp
+++ b/daemon/mgmt/segment-publisher.cpp
@@ -6,7 +6,7 @@
 
 #include "segment-publisher.hpp"
 
-#include "common.hpp"
+#include "core/logger.hpp"
 #include "face/face.hpp"
 
 #include <ndn-cpp-dev/util/time.hpp>