mgmt: NfdManagerBase::makeAuthorization uses CommandAuthenticator

This commit also eliminates Forwarder in Mgmt/TestFaceManager/CreateFace test suite
and uses FaceTable directly.

refs #2063

Change-Id: I596e8c2a12dad64ee75082f384955f30d574f53e
diff --git a/core/manager-base.cpp b/core/manager-base.cpp
index 02190a2..3aeec6f 100644
--- a/core/manager-base.cpp
+++ b/core/manager-base.cpp
@@ -33,7 +33,7 @@
 ManagerBase::ManagerBase(Dispatcher& dispatcher,
                          const std::string& module)
   : m_dispatcher(dispatcher)
-  , m_mgmtModuleName(module)
+  , m_module(module)
 {
 }