failed to delete stack which with in-progress snapshot, but without ERROR

[PanFengyun]

failed to delete stack which with in-progress snapshot, but without ERROR.

when excuting the following command:
# heat snapshot-list overcloud
+--------------------------------------+------+-------------+---------------+---------------------+
| id | name | status | status_reason | creation_time |
+--------------------------------------+------+-------------+---------------+---------------------+
| 2720b519-afc1-418f-8398-158a75adabf2 | snapshot | IN_PROGRESS | None | 2016-03-14T10:08:33 |
+--------------------------------------+------+-------------+---------------+---------------------+
# heat snapshot-delete overcloud 2720b519-afc1-418f-8398-158a75adabf2
ERROR: Deleting in-progress snapshot is not supported.
# heat stack-delete overcloud
+--------------------------------------+------------+----------------------+---------------------+--------------+
| id | stack_name | stack_status | creation_time | updated_time |
+--------------------------------------+------------+----------------------+---------------------+--------------+
| 9763a069-b601-453d-ac36-3f201f9236f5 | overcloud | SNAPSHOT_IN_PROGRESS | 2016-03-14T08:16:53 | None |
+--------------------------------------+------------+----------------------+---------------------+--------------+

why the stack_status of overcloud is not DELETED_FAILED?

reason:
stack-delete delete stack without determining whether overcloud contains in-progress snapshot.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/299239

[OpenStack Infra (hudson-openstack)]

Change abandoned by PanFengyun ([e-mail]) on branch: master
Review: https://review.openstack.org/292266

[OpenStack Infra (hudson-openstack)]

Change abandoned by PanFengyun (<email address hidden>) on branch: master
Review: https://review.openstack.org/299239