Alexander Reelsen 0a86f00d7e Tests: Ensure responses are closed in watch backwards compat tests
The HTTP client has to have it's response entities closed, otherwise
it might block further requests because the underlying connection cannot
be reused.

Relates elastic/x-pack-elasticsearch#2004

Original commit: elastic/x-pack-elasticsearch@a24ecb9764
2017-08-16 16:29:52 +02:00
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