glanceclient: following redirects is broken

[justinsb]

When the glanceclient gets a 302 redirect, it does this:

         return self._http_request(resp['location'], method, **kwargs)

(glanceclient/common/http.py line 235.)

But, __getattr__ is not defined on the httplib response object. It should do this:

           return self._http_request(resp.getheader('location'), method, **kwargs)

Not sure how this happened - did we swap out the http library? Should we use an http library that is capable of following redirects?

[Cindy Pallares (cpallares)]

Code was reviewed here: https://review.openstack.org/#/c/48481/