Get the ObjectNames of all deployed items in the specified cluster.
To extract the names, use {@link Util}.getNamesSet(set).
// specify all STANDALONE_SERVER_DEPLOYED_ITEM_REF_CONFIG
final String refsProp =
Util.makeJ2EETypeProp( XTypes.DEPLOYED_ITEM_REF_CONFIG );
// specify the server
final String clusterProp =
Util.makeProp( XTypes.CLUSTER_CONFIG, clusterName );
return( Util.toObjectNames( propsQuery( refsProp, clusterProp ) ) );