default boolean removeReplicasFromDataNode(List<ReplicaId> replicaIds) {
    return true;
  }
Update disk/replica infos associated with current data node in cluster (this occurs when replica addition/removal
on current node is complete and local changes will be broadcast to all listeners in this cluster)
@param replicaId the {@link ReplicaId} whose info should be updated on current node
@param shouldExist Whether the replica info should exist or not. When {@code true}, replica info will be added if
                     it is missing in current node info. When {@code false}, replica info will be removed if present.
@return if {@code true}, node info is successfully updated. {@code false} otherwise.
ambry-api/src/main/java/com/github/ambry/clustermap/ClusterParticipant.java