Comment 9 for bug 1446575

Reviewed: https://review.openstack.org/182599
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=da3777342a344a2dafb9244b7afca8722a398caa
Submitter: Jenkins
Branch: stable/kilo

commit da3777342a344a2dafb9244b7afca8722a398caa
Author: kairat_kushaev <email address hidden>
Date: Tue May 5 19:22:32 2015 +0300

    Save updated-in-place resources to backup stack

    The patch changes the approach of resource backup during stack
    update. It stores the definition of resource that needs to be
    updated in-place to backup stack(if it was not created before).

    Without this functionality, InvalidTemplateReference will be thrown
    every time when update-replaced resource has a reference to updated
    in-place resource and stack update was failed. In this case, backup
    stack has a resource that refers to not-presented another resource
    and backup stack deletion generates an exception.

    Change-Id: I436c44a579bb4df3031d1a17b9ca5b62da37afeb
    Closes-bug: #1446575
    (cherry-picked from commit f2edd0d68ea84f8ca212df0ec1d6d92463a030aa)