nlsr: Improve logging throughout lsdb.cpp and others

refs: #3934

Change-Id: I2365c88b795316c83dbeac2eab82f371c0275f88
diff --git a/src/route/fib.cpp b/src/route/fib.cpp
index 7c14d78..777ab1b 100644
--- a/src/route/fib.cpp
+++ b/src/route/fib.cpp
@@ -320,6 +320,7 @@
                          const std::string& faceUri,
                          uint8_t times)
 {
+  _LOG_DEBUG("Registering prefix: " << parameters.getName() << " faceUri: " << faceUri);
   m_controller.start<ndn::nfd::RibRegisterCommand>(parameters,
                                                    std::bind(&Fib::onRegistrationSuccess, this, _1,
                                                              "Successful in name registration",