Resizing an instance always yields the message "unknown instance"

[Nicolas Simonds]

When using the new resize instance functionality, on success, the message is always:

    Resized instance "unknown instance".

This is problematic for two reasons:

1. It should know the name of the instance
2. The error message is incorrect — all that has happened is that it has successfully started preparing the resize. A second confirm/revert step is required to complete the resize.

To reproduce:

1. Make an instance
2. Hit the "Resize Instance" button, change its flavor
3. Hilarity ensues

Expected behavior:

A confirmation message like:

    Preparing resize on instance "minecraft-server".

Actual behavior:

The message:

    Resized instance "unknown instance".

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/41222

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/41222
Committed: http://github.com/openstack/horizon/commit/41da1afd789e7d3a1a9132833794d89882eadefb
Submitter: Jenkins
Branch: master

commit 41da1afd789e7d3a1a9132833794d89882eadefb
Author: Nicolas Simonds <email address hidden>
Date: Fri Aug 9 17:12:07 2013 -0700

    Fix minor bugs in the "Resize Instance" workflow

    The name of the instance on success was always "unknown instance",
    because the name attribute wasn't getting populated in the context,
    and the text of the success message was wrong. Success of this
    action is successfully STARTING to resize. There's still a
    confirmation step.

    Fixes Bug: 1210692

    Change-Id: Ie8361fa222940e1ff02b581a3058a49ac16639d2