Using latest atomix release candidate + Updates to CopycatTransport

Change-Id: I960af428ff733ee7467024811e3b3470e951ecb7
diff --git a/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/PartitionManager.java b/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/PartitionManager.java
index 3826116..54abda2 100644
--- a/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/PartitionManager.java
+++ b/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/PartitionManager.java
@@ -27,6 +27,7 @@
 
 import org.apache.felix.scr.annotations.Activate;
 import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
 import org.apache.felix.scr.annotations.Reference;
 import org.apache.felix.scr.annotations.ReferenceCardinality;
 import org.apache.felix.scr.annotations.Service;
@@ -56,7 +57,6 @@
 public class PartitionManager extends AbstractListenerManager<PartitionEvent, PartitionEventListener>
     implements PartitionService, PartitionAdminService {
 
-    public static final String HELLO_MESSAGE_SUBJECT = "partition-manager-hello";
     private final Logger log = getLogger(getClass());
 
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
@@ -72,8 +72,6 @@
 
     @Activate
     public void activate() {
-        messagingService.registerHandler(HELLO_MESSAGE_SUBJECT,
-                                         (ep, input) -> CompletableFuture.completedFuture(input));
         eventDispatcher.addSink(PartitionEvent.class, listenerRegistry);
 
         metadataService.getClusterMetadata()
@@ -93,8 +91,8 @@
         log.info("Started");
     }
 
+    @Deactivate
     public void deactivate() {
-        messagingService.unregisterHandler(HELLO_MESSAGE_SUBJECT);
         eventDispatcher.removeSink(PartitionEvent.class);
 
         CompletableFuture<Void> closeFuture = CompletableFuture.allOf(partitions.values()