LoadBalancer resource doesn't delete nested stack

[Steven Hardy]

Similar to DBInstance issue ref bug 1097299, when a stack containing an AWS::ElasticLoadBalancing::LoadBalancer resource is deleted, the underlying nested stack (and related instance, and DB contents) is not deleted.

The reason is the resource inherits from stack.Stack not stack.NestedStack, and stack.Stack doesn't implement handle_delete()

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/19226

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/19226
Committed: http://github.com/openstack/heat/commit/c975a0e005612133a8188fa7490f6c3ff1899027
Submitter: Jenkins
Branch: master

commit c975a0e005612133a8188fa7490f6c3ff1899027
Author: Steven Hardy <email address hidden>
Date: Tue Jan 8 18:47:05 2013 +0000

    heat engine : LoadBalancer resource delete nested stack

    Ensure LoadBalancer resource deletes the underlying nested
    stack when the owning stack is deleted - needs to inherit
    from stack.NestedStack as this implements handle_delete()

    fixes bug 1097394

    Change-Id: I2002bed361511a495cbdf38cad7b61e148a68ba2
    Signed-off-by: Steven Hardy <email address hidden>