[Falcon] Fixed to avoid exception cases for compute node bootstrap

- Handled network config event with thread
- Considered ONOS restart situation, where node state in the store
is not the same as real state

Change-Id: Iec8c063317f1292052f299b680b7944821e60b7f
diff --git a/src/main/java/org/onosproject/cordvtn/CordVtn.java b/src/main/java/org/onosproject/cordvtn/CordVtn.java
index d56b3b6..fe196e1 100644
--- a/src/main/java/org/onosproject/cordvtn/CordVtn.java
+++ b/src/main/java/org/onosproject/cordvtn/CordVtn.java
@@ -264,13 +264,7 @@
             return;
         }
 
-        NodeState state = getNodeState(node);
-        if (state == null) {
-            return;
-        } else if (state.equals(NodeState.INCOMPLETE)) {
-            state = checkNodeState(node);
-        }
-
+        NodeState state = checkNodeState(node);
         state.process(this, node);
     }