image_tag_get_all only returns not found for non-existant image in simple db

[Alex Meade]

image_tag_get_all in simple db will raise a NotFound error if the given image does not exist. In sqlalchemy driver however, it will just return an empty list.

Both database drivers should have the same result in this case.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/35412

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/35412
Committed: http://github.com/openstack/glance/commit/dc5112f794c6da796cc2a64c61a159ab6a3af671
Submitter: Jenkins
Branch: master

commit dc5112f794c6da796cc2a64c61a159ab6a3af671
Author: Alex Meade <email address hidden>
Date: Tue Jul 2 19:04:18 2013 -0400

    Dont raise NotFound in simple db image_tag_get_all

    This patch removes the check in simple db. This is so both simple db and
    sqlalchemy have the same behavior. We do not necessarily want to perform two
    queries to see if the image exists so an empty list of tags is returned.

    Fixes bug 1197057

    Change-Id: Ibae37198b3854aa5dbe0e8a643a3d4b8608666c5