In-progress migrations may not have stashed instance types

[Brian Elliott]

Instance type information is now stashed in system metadata. However, for existing instances that already have a migration in progress, upgrading a compute node to recent code will cause the following error on startup.

http://paste.openstack.org/show/35225/

The error causes the compute node to fail to start.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/26033

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/26033
Committed: http://github.com/openstack/nova/commit/e9c88b7d3657d83ab84c081fbd56183061ed09c7
Submitter: Jenkins
Branch: master

commit e9c88b7d3657d83ab84c081fbd56183061ed09c7
Author: Brian Elliott <email address hidden>
Date: Wed Apr 3 19:24:14 2013 +0000

    Fallback to conductor if types are not stashed.

    If the instance types are not stashed, fallback to
    the conductor API to retrieve them.

    bug 1164110

    Change-Id: I1f0ef48e072f8580980de5bd8d43cf2206cd7d27

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/grizzly
Review: https://review.openstack.org/26870

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/26870
Committed: http://github.com/openstack/nova/commit/05e1c47709b1ab157ab7e04717c1132cffac0fd9
Submitter: Jenkins
Branch: stable/grizzly

commit 05e1c47709b1ab157ab7e04717c1132cffac0fd9
Author: Brian Elliott <email address hidden>
Date: Wed Apr 3 19:24:14 2013 +0000

    Fallback to conductor if types are not stashed.

    If the instance types are not stashed, fallback to
    the conductor API to retrieve them.

    bug 1164110

    Change-Id: I1f0ef48e072f8580980de5bd8d43cf2206cd7d27
    (cherry picked from commit e9c88b7d3657d83ab84c081fbd56183061ed09c7)