ONOS-3841 Only listen to Config change event

Change-Id: I1e9965240ce210240328c0fdb78f8ea529a341a7
diff --git a/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceNetworkConfigListener.java b/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceNetworkConfigListener.java
index ae2b406..7a04b65 100644
--- a/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceNetworkConfigListener.java
+++ b/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceNetworkConfigListener.java
@@ -69,7 +69,17 @@
 
     @Override
     public boolean isRelevant(NetworkConfigEvent event) {
-        return CONFIG_CLASSES.contains(event.configClass());
+        switch (event.type()) {
+        case CONFIG_ADDED:
+        case CONFIG_REMOVED:
+        case CONFIG_UPDATED:
+            return CONFIG_CLASSES.contains(event.configClass());
+
+        case CONFIG_REGISTERED:
+        case CONFIG_UNREGISTERED:
+        default:
+            return false;
+        }
     }
 
     @Override