Circular reference logging error

[Robert Myers]

When using the trove api for any call that results in a error. The trove logs report a circular reference error which is not related to the error in any way. The actual error are HTTP 404 or other well known errors:

Steps to reproduce:

$ trove show --id=some_not_found_id

Results in the error:

2013-10-28 10:54:11.284 10661 DEBUG trove.common.wsgi [req-b02b75f8-fba8-4721-a68a-348f34fe2771 154176 5801803] Mapped Error to <class 'webob.exc.HTTPNotFound'> execute_action /Cloud-Database/lib/private/trove/trove/common/wsgi.py:332
2013-10-28 10:54:11.284 10661 ERROR trove.common.wsgi [req-b02b75f8-fba8-4721-a68a-348f34fe2771 154176 5801803] unserializable result detected! Exception type: <type 'exceptions.ValueError'> Message: Circular reference detected

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/54149

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/54149
Committed: http://github.com/openstack/trove/commit/51cda4b50f0197c874fc34dc801f4a64b1cc3fd4
Submitter: Jenkins
Branch: master

commit 51cda4b50f0197c874fc34dc801f4a64b1cc3fd4
Author: Robert Myers <email address hidden>
Date: Mon Oct 28 11:49:21 2013 -0500

    Fix action_result check

    * change common.wsgi serialize_response to check for
      instances of Fault rather than webob.Response

    Fixes: bug #1245546

    Change-Id: I5a50234a8bd5d84918b87269054d23489e78629f