Migrate to async method

[ylwu-amzn]

Problem

See some timeout exception when RCFResultTransportAction get checkout points:

Cause

ElasticsearchTimeoutException[Cannot get response within time limit: get [.opendistro-anomaly-checkpoints][_doc][kay-UXEBjVN7EqCB9SOS_model_rcf_1]: routing [null]]

Seems RCFResultTransportAction is using deprecated method manager.getRcfResult(request.getAdID(), request.getModelID(), request.getFeatures())

Action

We need to migrate to async method.

Please check if we are using such deprecated methods at other places.

[ylwu-amzn]

Same for ThresholdResultTransportAction

My local log shows
[2020-04-07T10:20:18,579][ERROR][c.a.o.a.t.ThresholdResultTransportAction] [4c327594166b.ant.amazon.com] ElasticsearchTimeoutException[Cannot get response within time limit: get [.opendistro-anomaly-checkpoints][_doc][izSiQXEBZ8BuTDHZ70NC_model_threshold]: routing [null]]

[ylwu-amzn]

ADStateManager

ElasticsearchTimeoutException[Cannot get response within time limit: get [.opendistro-anomaly-detectors][_doc][WQXnUXEB44dtcje-PgWE]: routing [null]]