nova aggregate-create shouldn't require an Availability Zone

[Joe Gordon]

A user should be able to do run'nova aggregate-create az1_agg'

and get back:

+----+---------+-------------------+-------+----------+
| Id | Name | Availability Zone | Hosts | Metadata |
+----+---------+-------------------+-------+----------+
| 2 | az1_agg | None | | |
+----+---------+-------------------+-------+----------+

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/21829

[Joe Gordon (jogo)]

Fix for python-novalcient https://review.openstack.org/#/c/21830/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/21829
Committed: http://github.com/openstack/nova/commit/a71ff71e8b91b1d2f1ac97e170e6c60995679cd6
Submitter: Jenkins
Branch: master

commit a71ff71e8b91b1d2f1ac97e170e6c60995679cd6
Author: Joe Gordon <email address hidden>
Date: Tue Feb 12 22:51:57 2013 +0000

    Allow aggregate create to have None as the az

    Aggregates do not require a zone any more, but in order to keep the current API,
    Allow for availibilty zone to be set to None.

    Fixes bug 1123468

    Change-Id: I5209311f3417b5d7cdf343e5c06104357ed523d5

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/21830
Committed: http://github.com/openstack/python-novaclient/commit/9f0cf6a54719fff845c7446dbba89f5e9503564c
Submitter: Jenkins
Branch: master

commit 9f0cf6a54719fff845c7446dbba89f5e9503564c
Author: Joe Gordon <email address hidden>
Date: Tue Feb 12 22:55:08 2013 +0000

    Make availability_zone in aggregate_create optional

    Aggregates do not require an availability zone any more, but in order to
    keep the current API, allow for availability zone to be set to None (the new
    default value)

    Fixes bug 1123468

    Change-Id: I216c4fc808a91b0a5f602ee02ae1bca46adb73f4