ElasticSearch use of rest client (instead of TransportClient)

[Andrei Sereda]

Hello,

ES TransportClient is deprecated in 7.0 (to be removed
<https://www.elastic.co/guide/en/elasticsearch/client/java-api/master/transport-client.html>
in 8.0) in favor of http rest client(s). Would you consider a contribution
switching to Rest Low-Level Client
<https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/java-rest-low.html>(which
has much fewer dependencies) ?


Thanks,
Andrei.