Support to inject custom controller info through openstacknode

Change-Id: I3a545477b99f515b9e35ee0e7d5aaa03d979eaf7
diff --git a/apps/openstacknode/app/src/main/java/org/onosproject/openstacknode/impl/DefaultOpenstackPhyInterface.java b/apps/openstacknode/app/src/main/java/org/onosproject/openstacknode/impl/DefaultOpenstackPhyInterface.java
index f4238a3..498ce5c 100644
--- a/apps/openstacknode/app/src/main/java/org/onosproject/openstacknode/impl/DefaultOpenstackPhyInterface.java
+++ b/apps/openstacknode/app/src/main/java/org/onosproject/openstacknode/impl/DefaultOpenstackPhyInterface.java
@@ -22,6 +22,9 @@
 
 import static com.google.common.base.Preconditions.checkArgument;
 
+/**
+ * Implementation class of openstack physical interface.
+ */
 public class DefaultOpenstackPhyInterface implements OpenstackPhyInterface {
 
     private final String network;