Ensure http response body is always closed
Ensure http response body is always closed

Signed-off-by: Afolabi Badmos <ba6fa3406de3c43093aaeb64a5b5d821daad484a@pivotal.io>

cloudfoundry-incubator/garden,savaki/garden,tangfeixiong/garden,savaki/garden,tangfeixiong/garden,cloudfoundry-incubator/garden