glance/store/swift just does raise instead of reraising the exception

[Nikhil Komawar]

ERROR glance.api.v1.upload_utils [x-x-x-x] Failed to upload image
TRACE glance.api.v1.upload_utils Traceback (most recent call last):
TRACE glance.api.v1.upload_utils File "glance/api/v1/upload_utils.py", line 85, in upload_data_to_store
TRACE glance.api.v1.upload_utils image_meta['size'])
TRACE glance.api.v1.upload_utils File "glance/store/swift.py", line 382, in add
TRACE glance.api.v1.upload_utils raise
TRACE glance.api.v1.upload_utils TypeError: exceptions must be old-style classes or derived from BaseException, not NoneType

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/47534

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/47534
Committed: http://github.com/openstack/glance/commit/5a95201bf34805c38836c7b81112efe3e3aa6d8a
Submitter: Jenkins
Branch: master

commit 5a95201bf34805c38836c7b81112efe3e3aa6d8a
Author: sridevik <email address hidden>
Date: Fri Sep 20 03:35:36 2013 -0500

    Swift store add should not use wildcard raise

    When there is an yield block in an except clause prior to wildcard raise,
    if the thread is re-scheduled, the raise generates a TypeError.
    Since the caught exception has NoneType, it causes a wrong exception(NoneType)
    to be raised.

    Fixes bug #1226258

    Change-Id: I6ce56d1943535279f2ad40c7978b1539ed638d57