ONOS-1893: Fix incorrect event type in device mastership change notification

Change-Id: I5c317433ca8ac9e3f4305fb3519da48fb9da67e8
diff --git a/core/store/dist/src/main/java/org/onosproject/store/mastership/impl/ConsistentDeviceMastershipStore.java b/core/store/dist/src/main/java/org/onosproject/store/mastership/impl/ConsistentDeviceMastershipStore.java
index 862b3cb..bbd7b7a 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/mastership/impl/ConsistentDeviceMastershipStore.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/mastership/impl/ConsistentDeviceMastershipStore.java
@@ -17,7 +17,6 @@
 
 import static org.onlab.util.Tools.groupedThreads;
 import static org.onlab.util.Tools.futureGetOrElse;
-import static org.onosproject.mastership.MastershipEvent.Type.BACKUPS_CHANGED;
 import static org.onosproject.mastership.MastershipEvent.Type.MASTER_CHANGED;
 import static org.slf4j.LoggerFactory.getLogger;
 import static com.google.common.base.Preconditions.checkArgument;
@@ -408,7 +407,7 @@
                     // There is no concept of leader re-election in the new distributed leadership manager.
                     throw new IllegalStateException("Unexpected event type");
                 case LEADER_BOOTED:
-                    notifyDelegate(new MastershipEvent(BACKUPS_CHANGED, deviceId, getNodes(deviceId)));
+                    notifyDelegate(new MastershipEvent(MASTER_CHANGED, deviceId, getNodes(deviceId)));
                     break;
                 default:
                     return;