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/link/impl/LinkManager.java b/core/net/src/main/java/org/onosproject/net/link/impl/LinkManager.java
index d6f72fd..e41781a 100644
--- a/core/net/src/main/java/org/onosproject/net/link/impl/LinkManager.java
+++ b/core/net/src/main/java/org/onosproject/net/link/impl/LinkManager.java
@@ -337,6 +337,8 @@
             LinkKey lk = (LinkKey) event.subject();
             BasicLinkConfig cfg = networkConfigService.getConfig(lk, BasicLinkConfig.class);
 
+            log.debug("Detected link network config event {}", event.type());
+
             if (!isAllowed(cfg)) {
                 log.info("Kicking out links between {} and {}", lk.src(), lk.dst());
                 removeLink(lk.src(), lk.dst());