face: downgrade "Creating transport" log message to DEBUG

FaceTable already logs at INFO level whenever a new face is added.

Change-Id: Id2905c8b6d42df8bfc4c43cc12d432d9ce180aae
diff --git a/daemon/face/internal-transport.cpp b/daemon/face/internal-transport.cpp
index 5c59ad7..3e9552c 100644
--- a/daemon/face/internal-transport.cpp
+++ b/daemon/face/internal-transport.cpp
@@ -42,7 +42,7 @@
   this->setLinkType(linkType);
   this->setMtu(MTU_UNLIMITED);
 
-  NFD_LOG_FACE_INFO("Creating transport");
+  NFD_LOG_FACE_DEBUG("Creating transport");
 }
 
 void
diff --git a/daemon/face/multicast-ethernet-transport.cpp b/daemon/face/multicast-ethernet-transport.cpp
index f0fa5ce..80f13ea 100644
--- a/daemon/face/multicast-ethernet-transport.cpp
+++ b/daemon/face/multicast-ethernet-transport.cpp
@@ -63,7 +63,7 @@
   this->setLinkType(linkType);
   this->setMtu(localEndpoint.getMtu());
 
-  NFD_LOG_FACE_INFO("Creating transport");
+  NFD_LOG_FACE_DEBUG("Creating transport");
 
   char filter[110];
   // note #1: we cannot use std::snprintf because it's not available
diff --git a/daemon/face/multicast-udp-transport.cpp b/daemon/face/multicast-udp-transport.cpp
index ec50d7f..2c61527 100644
--- a/daemon/face/multicast-udp-transport.cpp
+++ b/daemon/face/multicast-udp-transport.cpp
@@ -68,7 +68,7 @@
     this->setSendQueueCapacity(sendBufferSizeOption.value());
   }
 
-  NFD_LOG_FACE_INFO("Creating transport");
+  NFD_LOG_FACE_DEBUG("Creating transport");
 }
 
 ssize_t
diff --git a/daemon/face/tcp-transport.cpp b/daemon/face/tcp-transport.cpp
index 4c747be..90c1825 100644
--- a/daemon/face/tcp-transport.cpp
+++ b/daemon/face/tcp-transport.cpp
@@ -54,7 +54,7 @@
   this->setLinkType(ndn::nfd::LINK_TYPE_POINT_TO_POINT);
   this->setMtu(MTU_UNLIMITED);
 
-  NFD_LOG_FACE_INFO("Creating transport");
+  NFD_LOG_FACE_DEBUG("Creating transport");
 }
 
 ssize_t
diff --git a/daemon/face/unicast-ethernet-transport.cpp b/daemon/face/unicast-ethernet-transport.cpp
index ed61d7a..3ed7800 100644
--- a/daemon/face/unicast-ethernet-transport.cpp
+++ b/daemon/face/unicast-ethernet-transport.cpp
@@ -54,7 +54,7 @@
     this->setMtu(localEndpoint.getMtu());
   }
 
-  NFD_LOG_FACE_INFO("Creating transport");
+  NFD_LOG_FACE_DEBUG("Creating transport");
 
   char filter[110];
   // note #1: we cannot use std::snprintf because it's not available
diff --git a/daemon/face/unicast-udp-transport.cpp b/daemon/face/unicast-udp-transport.cpp
index c872c09..c2c0d2b 100644
--- a/daemon/face/unicast-udp-transport.cpp
+++ b/daemon/face/unicast-udp-transport.cpp
@@ -60,7 +60,7 @@
   }
   BOOST_ASSERT(this->getMtu() >= MIN_MTU);
 
-  NFD_LOG_FACE_INFO("Creating transport");
+  NFD_LOG_FACE_DEBUG("Creating transport");
 
 #ifdef __linux__
   //
diff --git a/daemon/face/unix-stream-transport.cpp b/daemon/face/unix-stream-transport.cpp
index b1987a5..483a138 100644
--- a/daemon/face/unix-stream-transport.cpp
+++ b/daemon/face/unix-stream-transport.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2018,  Regents of the University of California,
+ * Copyright (c) 2014-2019,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -45,7 +45,7 @@
   this->setLinkType(ndn::nfd::LINK_TYPE_POINT_TO_POINT);
   this->setMtu(MTU_UNLIMITED);
 
-  NFD_LOG_FACE_INFO("Creating transport");
+  NFD_LOG_FACE_DEBUG("Creating transport");
 }
 
 } // namespace face
diff --git a/daemon/face/websocket-transport.cpp b/daemon/face/websocket-transport.cpp
index b7fdc20..63be570 100644
--- a/daemon/face/websocket-transport.cpp
+++ b/daemon/face/websocket-transport.cpp
@@ -74,7 +74,7 @@
 
   this->schedulePing();
 
-  NFD_LOG_FACE_INFO("Creating transport");
+  NFD_LOG_FACE_DEBUG("Creating transport");
 }
 
 void