update multiregion stack failed

[Ethan Lynn]

I create a simple multiregion stack with below template:
[elynn@localhost 20150306-multiregion]$ cat update.yaml
heat_template_version: 2013-05-23
parameters:
 flavor:
    type: string
    default: m1.nano
 image:
    type: string
    default: cirros-0.3.2-x86_64-uec
resources:
   stack:
    type: OS::Heat::Stack
    properties:
      context:
        region_name: RegionOne
      template: {get_file: web.yaml}
      parameters:
        flavor: {get_param: flavor}
        image: {get_param: image}

I create a stack using command
heat stack-create mr -f update.yaml

then update it without any change
heat stack-update mr -f update.yaml

Update will failed
[elynn@localhost 20150306-multiregion]$ heat stack-list
+--------------------------------------+-----------------------+-----------------+----------------------+
| id | stack_name | stack_status | creation_time |
+--------------------------------------+-----------------------+-----------------+----------------------+
| 90579e37-6bfc-45b6-b757-c7f7b2b00931 | mr | UPDATE_FAILED | 2015-03-06T15:29:17Z |
| a3ccb32a-7340-4c09-9ea3-e83c342bc242 | mr-stack-ocpwszutlrle | CREATE_COMPLETE | 2015-03-06T15:29:18Z |
+--------------------------------------+-----------------------+-----------------+----------------------+

And reason is:
ResourceUnknownStatus: Resource failed - Unknown status CREATE_COMPLETE due to "Resource action mismatch detected: expected=UPDATE actual=CREATE"

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/162053

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/162053
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=4cbd1431ee103dd24852bb3b0780cd933e64e158
Submitter: Jenkins
Branch: master

commit 4cbd1431ee103dd24852bb3b0780cd933e64e158
Author: Ethan Lynn <email address hidden>
Date: Fri Mar 6 23:54:43 2015 +0800

    Always update remote_stack

    Always update remote_stack even though properties didn't change,
    and let the let the individual resources in it decide if they
    need updating

    Closes-Bug: #1428979
    Change-Id: Id0898683b86e3a72e539f2432f521c7ee70afe26