Fixed VTN fails to reinstall flow rules for a restarted VM

Change-Id: I48d5954021c27e152eb995cc84fb3ce2dd9907df
diff --git a/src/main/java/org/opencord/cordvtn/impl/CordVtnNodeManager.java b/src/main/java/org/opencord/cordvtn/impl/CordVtnNodeManager.java
index f7f9c2d..84097cc 100644
--- a/src/main/java/org/opencord/cordvtn/impl/CordVtnNodeManager.java
+++ b/src/main/java/org/opencord/cordvtn/impl/CordVtnNodeManager.java
@@ -804,7 +804,9 @@
                     eventExecutor.execute(() -> bridgeHandler.portAdded(event.port()));
                     break;
                 case PORT_UPDATED:
-                    if (!event.port().isEnabled()) {
+                    if (event.port().isEnabled()) {
+                        eventExecutor.execute(() -> bridgeHandler.portAdded(event.port()));
+                    } else {
                         eventExecutor.execute(() -> bridgeHandler.portRemoved(event.port()));
                     }
                     break;