Handle 300 multiple choices response

[Brian Waldon]

If I make a request to the v1 API (glance image-list) but that version of the API is not available, I get the following (debug) response. The line at the bottom indicates a KeyError is being raised:

vagrant@precise:~/devstack$ glance --debug image-list
curl -i -X GET -H 'X-Auth-Token: 8a41945380af4da98b71163d2d03b554' -H 'Content-Type: application/json' -H 'User-Agent: python-glanceclient' http://192.168.27.100:9292/v1/images/detail?limit=20

HTTP/1.1 300 Multiple Choices
date: Wed, 05 Sep 2012 23:42:08 GMT
content-length: 126
content-type: application/json

{"versions": [{"status": "EXPERIMENTAL", "id": "v2.0", "links": [{"href": "http://192.168.27.100:9292/v2/", "rel": "self"}]}]}

'images'

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/12607

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/12607
Committed: http://github.com/openstack/python-glanceclient/commit/5acd5a6a4adc430989ae05c434d0ac5a9a448b84
Submitter: Jenkins
Branch: master

commit 5acd5a6a4adc430989ae05c434d0ac5a9a448b84
Author: isethi <email address hidden>
Date: Fri Sep 7 20:54:09 2012 +0000

    Catches HTTP 300 while printing responses

    If glance v1 api is not enabled, and a request is made to it,
    it gives a KeyError. This patch catches the 300 error and
    displays error message.

    Fixes bug 1046607

    Change-Id: I0009a5deca3b5dd5ccaeaea90feee21274bfe090