private void changeBlueprintProvisioningState(BlueprintProvisioningState newState) {
    boolean updated = setBlueprintProvisioningState(newState);
    if (updated) {
      try {
        //host level params update
        hostLevelParamsHolder.updateAllHosts();
      } catch (AmbariException e) {
        LOG.error("Topology update failed after setting blueprint provision state to {}", newState, e);
      }
    }
  }
Handles {@link ClusterConfigChangedEvent} which means that the
{{cluster-env}} may have changed.

@param event
         the change event.
ambari-server/src/main/java/org/apache/ambari/server/state/cluster/ClusterImpl.java