core: reimplement logging using ndn-cxx's facility

Change-Id: Ifc7c5d70a61ad405dc1f1adfa522a2c0ad1586ab
Refs: #4580
diff --git a/daemon/mgmt/command-authenticator.cpp b/daemon/mgmt/command-authenticator.cpp
index 04f2476..0b6346b 100644
--- a/daemon/mgmt/command-authenticator.cpp
+++ b/daemon/mgmt/command-authenticator.cpp
@@ -41,7 +41,7 @@
 
 namespace nfd {
 
-NFD_LOG_INIT("CommandAuthenticator");
+NFD_LOG_INIT(CommandAuthenticator);
 // INFO: configuration change, etc
 // DEBUG: per authentication request result