Can not update resources which are in UPDATE_IN_PROGRESS anymore

[huangtianhua]

1. create a stack with a nova server
2. update the stack to rebuild the server
3. something happened, the engine service down when stack updating
4. after the engine service up again, the stack go to UPDATE_FAILED
5. try update the stack again, but can't to update, the reason is: Resource update already requested

The code https://github.com/openstack/heat/blob/master/heat/engine/resource.py#L934
Heat will check the resource whether is in progress, but didn't consider the engine down situation.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/215486

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/215486
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=fae9ae327fbd9f1bfb1d6301a49b780e7a9192cd
Submitter: Jenkins
Branch: master

commit fae9ae327fbd9f1bfb1d6301a49b780e7a9192cd
Author: huangtianhua <email address hidden>
Date: Fri Aug 21 14:17:50 2015 +0800

    Set resource status to FAILED when engine is down

    When resource is in status IN_PROGRESS and engine service
    went down, user can't operate(such as update) the resource
    anymore even if the engine service is back again.
    This patch set the resources to FAILED status when
    the engine starting.

    Change-Id: Ib49895d45d727e117af5dbdcf84d58b196991274
    Closes-Bug: #1487288

[Zane Bitter (zaneb)]

This is particularly bad in kilo because of bug 1446252.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/kilo
Review: https://review.openstack.org/231802

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/231802
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=2f14f1fcd592e8b9cd77903e02daf5c34e952dba
Submitter: Jenkins
Branch: stable/kilo

commit 2f14f1fcd592e8b9cd77903e02daf5c34e952dba
Author: huangtianhua <email address hidden>
Date: Fri Aug 21 14:17:50 2015 +0800

    Set resource status to FAILED when engine is down

    When resource is in status IN_PROGRESS and engine service
    went down, user can't operate(such as update) the resource
    anymore even if the engine service is back again.
    This patch set the resources to FAILED status when
    the engine starting.

    Change-Id: Ib49895d45d727e117af5dbdcf84d58b196991274
    Closes-Bug: #1487288
    (cherry picked from commit fae9ae327fbd9f1bfb1d6301a49b780e7a9192cd)