Move launchconfig reference checking to validate()

[huangtianhua]

There is a user case: The aws asg resource doesn't have a dependency on the launchconfiguration resource. This can happen if the the actual resource name is used instead of {get_resource: launch_conf} and no depends_on is used.

Now we have a check for launchconfig reference in handle_create(), need to move this check to validate() to make sure we can check when aws asg update.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/290247

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/290247
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=ee086961a631b7af8ae8b7a215e337a6020eef34
Submitter: Jenkins
Branch: master

commit ee086961a631b7af8ae8b7a215e337a6020eef34
Author: huangtianhua <email address hidden>
Date: Tue Mar 8 17:16:23 2016 +0800

    Move launchconfig reference validation to validate()

    Now we do launchconfig reference check for
    AWS::AutoScaling::AutoScalingGroup and OS::Heat::InstanceGroup
    resources only in handle_create(), this patch moves the
    check to validate(), then the validation will work when
    resource update.

    Change-Id: I727c7155ce708a11184aad6fea36a365f1022c92
    Closes-Bug: #1554311

[Thierry Carrez (ttx)]

This issue was fixed in the openstack/heat 6.0.0.0rc1 release candidate.