FIxing basic device config and demoting some config-related messages to debug.

Change-Id: I38b8479a9e3f367c26b0400de4c7b92719f19dcc
diff --git a/core/net/src/main/java/org/onosproject/net/device/impl/DeviceManager.java b/core/net/src/main/java/org/onosproject/net/device/impl/DeviceManager.java
index 4ee9a00..686cc7d 100644
--- a/core/net/src/main/java/org/onosproject/net/device/impl/DeviceManager.java
+++ b/core/net/src/main/java/org/onosproject/net/device/impl/DeviceManager.java
@@ -741,7 +741,7 @@
         public void event(NetworkConfigEvent event) {
             DeviceEvent de = null;
             if (event.configClass().equals(BasicDeviceConfig.class)) {
-                log.info("Detected Device network config event {}", event.type());
+                log.debug("Detected device network config event {}", event.type());
                 DeviceId did = (DeviceId) event.subject();
                 BasicDeviceConfig cfg = networkConfigService.getConfig(did, BasicDeviceConfig.class);