[proxy] - Regression failures on list queues

[Malini Kamalambal]

Outcome
=======

The following functional tests are failing after the proxy changes.
tests.functional.wsgi.v1.test_queues.TestQueueMisc.test_list_queue_invalid_limit_-1 ... FAIL
tests.functional.wsgi.v1.test_queues.TestQueueMisc.test_list_queue_invalid_limit_0 ... FAIL
tests.functional.wsgi.v1.test_queues.TestQueueMisc.test_list_queue_invalid_limit_30 ... FAIL
tests.functional.wsgi.v1.test_queues.TestQueueMisc.test_list_queues_detailed … FAIL

#1, 2 & 3 (List Queues with invalid value for limit ) are returning 200s instead of http 400.
#4 (List Queues with detailed=True) is returning http 500

More details here : http://paste.openstack.org/show/47876/

Summary
=======

Scenarios
---------

1. Listing queues with an invalid limit
2. Listing queues with detailed=True

Errors
------

For scenario 1, the invalid limit is ignored and results are returned.
For scenario 2, the proxy returns a 500 level error.

[Zhihao Yuan (zyuan)]

Found one possible reason.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/49783

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/49783
Committed: http://github.com/openstack/marconi/commit/943213fadb2a41a85ee42dde6ebc52142eb9dd57
Submitter: Jenkins
Branch: master

commit 943213fadb2a41a85ee42dde6ebc52142eb9dd57
Author: Zhihao Yuan <email address hidden>
Date: Fri Oct 4 12:08:59 2013 -0400

    fix: listing queue fails when detailed=True

    Change-Id: Ibda6bf0ee500b1e21893c1433bf3b839af1cef22
    Partially-Closes-Bug: 1234481

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/50342
Committed: http://github.com/openstack/marconi/commit/39d0d2f52299fd93ba6a00ca2f113a24ec370aba
Submitter: Jenkins
Branch: master

commit 39d0d2f52299fd93ba6a00ca2f113a24ec370aba
Author: Alejandro Cabrera <email address hidden>
Date: Tue Oct 8 09:08:27 2013 -0400

    fix: validate queue listing limits in proxy

    Adds the appropriate unit test to show that this works and keeps
    working for the forseeable future.

    Change-Id: I25d3ba3f9b1e3a51d8ba86171cd7329585c3e080
    Closes-Bug: 1234481