logging: Reducing log level in several places

INFO level is suppose to be used for informational messages that are
useful for ordinary user, but in several places we used it as a DEBUG
output.

In CS the level is reduced even more, to TRACE.

Change-Id: I9058e25d95de79661099dd4624d802cc33420983
diff --git a/daemon/table/cs-entry.cpp b/daemon/table/cs-entry.cpp
index c98a66c..044fd45 100644
--- a/daemon/table/cs-entry.cpp
+++ b/daemon/table/cs-entry.cpp
@@ -134,7 +134,7 @@
        it != m_layerIterators.end();
        ++it)
     {
-      NFD_LOG_DEBUG("[" << it->first << "]" << " " << &(*it->second));
+      NFD_LOG_TRACE("[" << it->first << "]" << " " << &(*it->second));
     }
 }