2a898de87a
Bump the elasticsearch-rest-client version to 6.6.0, accordingly. None of the breaking changes mentioned in [1] negatively impact this integration, according to console output of the 'elastic' tagged tests. [1] https://www.elastic.co/guide/en/elasticsearch/reference/current/release-notes-6.6.0.html Change-Id: I4908254ebda9a2a8296b1fe7b174065637485a03