tree fceffcdb1debe0e5a488a0d3fc4d41aaab5d04a8
parent 9397cb9eeaa941b4209b7fa3a9ef6aa8e23cb6ad
author David Pursehouse <dpursehouse@collab.net> 1527656610 +0900
committer David Pursehouse <dpursehouse@collab.net> 1527832814 +0900

ElasticRestClientProvider: Detect Elasticsearch version

On initialization of the client, make a GET request to the Elasticsearch
server and parse the version out of the response.

Log the version at info level.

In follow-up commits, the version will be stored and used to change the
structure of queries based on which Elasticsearch version is used.

Change-Id: I693b54d008b24191c66dbf16815a223441d22d43