race condition in test_delete_backup

[Avishay Traeger]

The test_delete_backup unit test fails sporadically as such:

2014-02-19 06:55:33.645 | Traceback (most recent call last):
2014-02-19 06:55:33.645 | File "cinder/tests/test_backup.py", line 360, in test_delete_backup
2014-02-19 06:55:33.645 | self.assertGreater(timeutils.utcnow(), backup.deleted_at)
2014-02-19 06:55:33.645 | File "cinder/test.py", line 280, in assertGreater
2014-02-19 06:55:33.645 | f(first, second, msg=msg)
2014-02-19 06:55:33.645 | File "/usr/lib/python2.7/unittest/case.py", line 940, in assertGreater
2014-02-19 06:55:33.646 | self.fail(self._formatMessage(msg, standardMsg))
2014-02-19 06:55:33.646 | File "/usr/lib/python2.7/unittest/case.py", line 408, in fail
2014-02-19 06:55:33.646 | raise self.failureException(msg)
2014-02-19 06:55:33.646 | AssertionError: datetime.datetime(2014, 2, 19, 6, 53, 14, 473836) not greater than datetime.datetime(2014, 2, 19, 6, 53, 14, 473836)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/75944

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/75944
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=115b6276ac3dd7b3e8c6a42e9d0d80709791b7a2
Submitter: Jenkins
Branch: master

commit 115b6276ac3dd7b3e8c6a42e9d0d80709791b7a2
Author: Avishay Traeger <email address hidden>
Date: Mon Feb 24 19:55:15 2014 +0200

    Fix race in test_delete_backup

    Unit test sporadically failed due to timing issue - the deletion
    timestamp on the backup was exactly the same as timeutils.utcnow(),
    causing the AssertGreater check to fail. Change to AssertGreaterEqual.

    Change-Id: Ia66d0d4bdae3242780a91f0d384cbd17caa8c197
    Closes-bug: #1284227