VMware: concurrent access for deletion may fail

[Gary Kotton]

Integration with oslo VMware did not treat the exception 'TaskInProgress' correctly. The probelm here is that a retry will not be invoked and the exception will be raised.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/121479

[OpenStack Infra (hudson-openstack)]

Change abandoned by Davanum Srinivas (dims) (<email address hidden>) on branch: master
Review: https://review.openstack.org/121614

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/121479
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=af4723842a5ac0c5da409cd3338541cf10a243b1
Submitter: Jenkins
Branch: master

commit af4723842a5ac0c5da409cd3338541cf10a243b1
Author: Gary Kotton <email address hidden>
Date: Mon Sep 15 02:14:37 2014 -0700

    VMware: fix regression for 'TaskInProgress'

    Commit 73d4a7c1b4681accd993c1109a9eff837ff612f4 caused a regression
    with the snapshot deletion. That is, the snapshot deletion will retry
    if the resource is busy. The fact that the exception was not supported
    in olso caused the problem.

    Version 0.6.0 supports this exception.

    Change-Id: I12fcc7d039a123e681c51978b9cf632af8f9644b
    Closes-bug: #1369463