volume api returns garbage when not attached

[Brian Waldon]

A volume should have an empty list of attachments when unattached. An empty dict is not necessary:

{"volume": {
"status": "available",
"displayDescription": "",
"availabilityZone": "nova",
"displayName": "vol1",
"attachments": [{}],
"volumeType": null,
"snapshotId": null,
"size": 1,
"id": 1,
"createdAt": "2012-02-28 22:18:10",
"metadata": {}
}}

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/4661

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/4663

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/4663
Committed: http://github.com/openstack/nova/commit/36100f6f99b317ef9f10f101f7cecfb1639255a8
Submitter: Jenkins
Branch: master

commit 36100f6f99b317ef9f10f101f7cecfb1639255a8
Author: Brian Waldon <email address hidden>
Date: Tue Feb 28 17:11:05 2012 -0800

    Return empty list when volume not attached

    * The api used to return a list of a single empty dict
    * Fixes bug 942990

    Change-Id: I9926515acfcedf711e81615aa13cec0bbf968086

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/4661
Committed: http://github.com/openstack/openstack-manuals/commit/eb2e571a4693efc25e34f715017dcd4478e057fc
Submitter: Jenkins
Branch: master

commit eb2e571a4693efc25e34f715017dcd4478e057fc
Author: Brian Waldon <email address hidden>
Date: Tue Feb 28 16:58:55 2012 -0800

    Update volume attachments

    * Attachments are empty list, not list of a single empty dict
    * Fixes bug 942990

    Change-Id: Ib26a5b2b3f33bf3a97755949da5f6df9a43c5a4a