@Override
    public CompletableFuture<Void> asyncIndexTask(TaskSummary task) {
        return CompletableFuture.runAsync(() -> indexTask(task), executorService);
    }
Initializes the indexes templates task_log, message and event, and mappings.
es6-persistence/src/main/java/com/netflix/conductor/es6/dao/index/ElasticSearchDAOV6.java