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/daemon/mgmt/fib-manager.cpp b/daemon/mgmt/fib-manager.cpp
index 1c15ebf..9992789 100644
--- a/daemon/mgmt/fib-manager.cpp
+++ b/daemon/mgmt/fib-manager.cpp
@@ -34,8 +34,8 @@
 FibManager::FibManager(Fib& fib,
                        const FaceTable& faceTable,
                        Dispatcher& dispatcher,
-                       CommandValidator& validator)
-  : NfdManagerBase(dispatcher, validator, "fib")
+                       CommandAuthenticator& authenticator)
+  : NfdManagerBase(dispatcher, authenticator, "fib")
   , m_fib(fib)
   , m_faceTable(faceTable)
 {