Comment 1 for bug 1478690

This appears in other services too - glance --debug image-list, for instance:

HTTP/1.1 200 OK
date: Mon, 27 Jul 2015 23:17:37 GMT
connection: keep-alive
content-type: application/json; charset=UTF-8
content-length: 1642
x-openstack-request-id: req-req-1de6f809-da0f-4ca3-b262-4f206cd4700d