read and close http.Response.Body to allow keep-alive connection reuse (#117)
read and close http.Response.Body to allow keep-alive connection reuse (#117)

rsp.Body is guaranteed to be non-nil, and should be read to completion
(or error) and then closed. Ref:
https://github.com/golang/go/blob/6becb033341602f2df9d7c55cc23e64b925bbee2/src/net/http/response.go#L59

Fixes #104.
buchgr/bazel-remote,buchgr/bazel-remote