Errored snapshots shouldn't be shown in the 'Create Volume' menu

[Julie Pichon]

We should filter out snapshots with the status "Error" from the drop-down list when Creating a new Volume since they won't work.

https://github.com/openstack/horizon/blob/00f8b11d956cbdee1bbe06a67b79127b6e3e330f/openstack_dashboard/dashboards/project/volumes/forms.py#L110

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/56863

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/56863
Committed: http://github.com/openstack/horizon/commit/444743a116b8e217a6acd30040ec3b899e52a22e
Submitter: Jenkins
Branch: master

commit 444743a116b8e217a6acd30040ec3b899e52a22e
Author: Zhenguo Niu <email address hidden>
Date: Mon Nov 18 14:25:13 2013 +0800

    Filter snapshots with status 'available'

    We should use 'available' snapshot when creating
    a new volume.

    Change-Id: I77680a8145452013c3a8957accfaa9171327bddd
    Fixes: bug#1251374