Don't stop create immediately on error

[huangtianhua]

1. create a stack with template:
heat_template_version: 2013-05-23

resources:
  her_policy_group:
    type: OS::Nova::ServerGroup
    # A Nova ServerGroup
    properties:
      name: nova-server-group
      policies: [affinity]

  her_asg:
    type: OS::Heat::AutoScalingGroup
    properties:
      resource:
        type: OS::Nova::Server
        properties:
            image: 74f50a38-1786-4ad0-8c12-5a5b9ba52c36
            flavor: m1.tiny
            scheduler_hints: {group: {get_resource: her_policy_group}}
      desired_capacity: 11
2. the stack create failed due to exceed the quota(default is 10)

3. nova list, the 10 instances are in active state

4. but list the nested_stack resources, the resources(instances) are all in CREATE_FAILED, due to the create tasks are canceled immediately on error.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/130152

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/130152
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=b025e2d2242954668030126e6f79151151123e12
Submitter: Jenkins
Branch: master

commit b025e2d2242954668030126e6f79151151123e12
Author: huangtianhua <email address hidden>
Date: Wed Oct 22 15:48:26 2014 +0800

    Don't stop create immediately on error for stack resources

    Don't stop create immediately on error for stack resources,
    such as autoscalingGroup.

    Kicked from Gate, heat can't pass pep8.

    Change-Id: I0a41954f89e2000785c2105b8366e9e49858b65f
    Closes-bug: #1383645