mgmt: FaceManager no longer owns FaceSystem

refs #3904

Change-Id: I2ef6fd36a51493eea27d8eb0e1c7dc022766f948
diff --git a/daemon/face/face-system.hpp b/daemon/face/face-system.hpp
index bca7702..d1f38b9 100644
--- a/daemon/face/face-system.hpp
+++ b/daemon/face/face-system.hpp
@@ -67,6 +67,12 @@
   ProtocolFactory*
   getFactoryByScheme(const std::string& scheme);
 
+  FaceTable&
+  getFaceTable()
+  {
+    return m_faceTable;
+  }
+
   /** \brief register handler for face_system section of NFD configuration file
    */
   void