Fix to notify the link provider service form netcfglinkprovider when link netcfg is added

Change-Id: Ifc34e0c8789d131c8459ef75bde2a3a5c6ecf19b
(cherry picked from commit 2e70e23a720d42ed839bd7bf5b5c02a2d3a62f7e)
diff --git a/providers/netcfglinks/src/main/java/org/onosproject/provider/netcfglinks/NetworkConfigLinksProvider.java b/providers/netcfglinks/src/main/java/org/onosproject/provider/netcfglinks/NetworkConfigLinksProvider.java
index 30608e4..d908681 100644
--- a/providers/netcfglinks/src/main/java/org/onosproject/provider/netcfglinks/NetworkConfigLinksProvider.java
+++ b/providers/netcfglinks/src/main/java/org/onosproject/provider/netcfglinks/NetworkConfigLinksProvider.java
@@ -519,7 +519,11 @@
     private class InternalConfigListener implements NetworkConfigListener {
 
         private void addLink(LinkKey linkKey) {
+            DefaultLinkDescription linkDescription =
+                    new DefaultLinkDescription(linkKey.src(), linkKey.dst(),
+                            Link.Type.DIRECT);
             configuredLinks.add(linkKey);
+            providerService.linkDetected(linkDescription);
         }
 
         private void removeLink(LinkKey linkKey) {