intermittent test_ec2_instance_run tearDownClass fail

[Christopher Yeoh]

Intermittently get a failure in tearDownClass in test_ec2_instance_run

See here for an example: http://logs.openstack.org/29487/7/check/gate-tempest-devstack-vm-quantum/26176/console.html

2013-05-30 05:16:43.506 | tempest.thirdparty.boto.test_ec2_volumes.EC2VolumesTest.test_create_get_delete[gate,smoke] ... FAIL
2013-05-30 05:23:24.980 | tempest.thirdparty.boto.test_ec2_volumes.EC2VolumesTest.test_create_volume_from_snapshot[gate,smoke] ... FAIL
2013-05-30 05:23:39.661 | ERROR
2013-05-30 05:23:39.966 | tempest.thirdparty.boto.test_s3_buckets.S3BucketsTest.test_create_and_get_delete_bucket[gate,smoke] ... SKIP: Skipped until the Bug #1076965 is resolved
2013-05-30 05:23:52.276 | tempest.thirdparty.boto.test_s3_ec2_images.S3ImagesTest.test_register_get_deregister_ami_image[gate,smoke] ... ok
2013-05-30 05:23:52.832 | tempest.thirdparty.boto.test_s3_objects.S3BucketsTest.test_create_get_delete_object[gate,smoke] ... ok
2013-05-30 05:23:52.869 |
2013-05-30 05:23:52.869 | ======================================================================
2013-05-30 05:23:52.869 | ERROR: test suite for <class 'tempest.thirdparty.boto.test_ec2_instance_run.InstanceRunTest'>
2013-05-30 05:23:52.869 | ----------------------------------------------------------------------
2013-05-30 05:23:52.870 | Traceback (most recent call last):
2013-05-30 05:23:52.870 | File "/usr/lib/python2.7/dist-packages/nose/suite.py", line 227, in run
2013-05-30 05:23:52.870 | self.tearDown()
2013-05-30 05:23:52.870 | File "/usr/lib/python2.7/dist-packages/nose/suite.py", line 350, in tearDown
2013-05-30 05:23:52.870 | self.teardownContext(ancestor)
2013-05-30 05:23:52.870 | File "/usr/lib/python2.7/dist-packages/nose/suite.py", line 366, in teardownContext
2013-05-30 05:23:52.870 | try_run(context, names)
2013-05-30 05:23:52.871 | File "/usr/lib/python2.7/dist-packages/nose/util.py", line 478, in try_run
2013-05-30 05:23:52.871 | return func()
2013-05-30 05:23:52.871 | File "/opt/stack/new/tempest/tempest/thirdparty/boto/test.py", line 264, in tearDownClass
2013-05-30 05:23:52.871 | raise exceptions.TearDownException(num=fail_count)
2013-05-30 05:23:52.871 | TearDownException: %(num)d cleanUp operation failed
2013-05-30 05:23:52.871 | Details: 2 cleanUp operation failed
2013-05-30 05:23:52.871 | -------------------- >> begin captured logging << --------------------