Spring Do not close response for InputStreamResource

Closing underlying stream should be responsibility of InputStreamResource

ResponseEntity<InputStreamResource> entity = restTemplate.getForEntity(url, InputStreamResource.class);
try (InputStream is = response.getBody().getInputStream()) {
    // do something
}

"java.io.IOException: closed" is fixed after this commit

Comment From: bclozel

RestTemplate is closing the response by design. See #21424 and https://github.com/spring-projects/spring-framework/issues/19448#issuecomment-453446935 for more background about this. I'm declining this PR as a result.

Thanks!