Reenable consistent notification support

Change-Id: I08b50858344d5ea6dd8e2852d45fb31dcbab4660
diff --git a/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/Database.java b/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/Database.java
index d48e74e..ff3e36a 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/Database.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/Database.java
@@ -88,7 +88,9 @@
    * Tells whether the database supports change notifications.
    * @return true if notifications are supported; false otherwise
    */
-  boolean hasChangeNotificationSupport();
+  default boolean hasChangeNotificationSupport() {
+      return true;
+  }
 
   /**
    * Registers a new consumer of StateMachineUpdates.