Two different Exception didn't log seperately when get images information

[Haojie Jia]

Two different Exceptions didn't log seperately when get images information.
 In glance/registry/api/v1/images.py file , Controls. _get_images:() include codes as follows:
        try:
            return self.db_api.image_get_all(context, filters=filters,
                                             **params)
        except (exception.NotFound, exception.Forbidden) as e:
            msg = _("Invalid marker. Image could not be found.")
            raise exc.HTTPBadRequest(explanation=msg)

see https://github.com/openstack/glance/blob/master/glance/registry/api/v1/images.py#L108

[Haojie Jia (jiahaojie)]

Fix proposed to branch: master (bug/1263871)
https://review.openstack.org/#/c/63891/

[wanghong (w-wanghong)]

I think give two different logs is useful for debug. We can refer to https://github.com/openstack/glance/blob/master/glance/registry/api/v1/images.py#L307.
I have talked with Haojie Jia, I will take this over.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/66532

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/66532
Committed: https://git.openstack.org/cgit/openstack/glance/commit/?id=ce23069f4bf346c8cbbf4e6e9328d3ca812718a9
Submitter: Jenkins
Branch: master

commit ce23069f4bf346c8cbbf4e6e9328d3ca812718a9
Author: wanghong <email address hidden>
Date: Tue Jan 14 18:18:25 2014 +0800

    add log for _get_images method

    The _get_images method in glance/registry/api/v1/images.py doesn't
    give logs when catch exceptions. Two logs for two different
    exceptions will be very useful for debug.

    Change-Id: I5725da0dafdb9909de1c31734b3c1c225483ca66
    Closes-Bug:#1263871