Add log messages for NFC config file parsing

Test: manual
Change-Id: I4e406fc08a262a18f530e2a7d741599db3068a79
diff --git a/utils/config.cc b/utils/config.cc
index 266bc79..7c643b0 100644
--- a/utils/config.cc
+++ b/utils/config.cc
@@ -86,6 +86,7 @@
   string config;
   bool config_read = ReadFileToString(file_name, &config);
   CHECK(config_read);
+  LOG(INFO) << "ConfigFile - Parsing file '" << file_name << "'";
   parseFromString(config);
 }
 
@@ -109,6 +110,8 @@
     CHECK(value_parsed);
     CHECK(!hasKey(key));
     values_.emplace(key, value);
+
+    LOG(INFO) << "ConfigFile - [" << key << "] = " << value_string;
   }
 }