Using 1.0.0.rc2 version of Atomix
CopycatTransport updates

Change-Id: If384ac2574f098c327f0e5749766268c8d7f1ecd
diff --git a/core/store/primitives/src/main/java/org/onosproject/store/primitives/resources/impl/AtomixLeaderElector.java b/core/store/primitives/src/main/java/org/onosproject/store/primitives/resources/impl/AtomixLeaderElector.java
index b7e48fa..9995c4d 100644
--- a/core/store/primitives/src/main/java/org/onosproject/store/primitives/resources/impl/AtomixLeaderElector.java
+++ b/core/store/primitives/src/main/java/org/onosproject/store/primitives/resources/impl/AtomixLeaderElector.java
@@ -57,7 +57,7 @@
     @Override
     public CompletableFuture<AtomixLeaderElector> open() {
         return super.open().thenApply(result -> {
-            client.session().onEvent("change", this::handleEvent);
+            client.onEvent("change", this::handleEvent);
             return result;
         });
     }