heat produced a blocker for development of novaclient

[Andriy Kurilin]

novaclient(like most of OpenStack clients) has a simple interface for obtaining versioned object of NovaClient[1].
While porting heat to use novaclient v2[2], this interface was replaced by direct usage of versioned client class. Such change produced a blocker for development of novaclient. Instead of supporting backward compatibility only in one method(novaclient.client.Client), nova guys should take care about all classes.

The simple example is implementation support of microversions - https://review.openstack.org/#/c/136458/24 .

[1] - https://github.com/openstack/python-novaclient/blob/master/novaclient/client.py#L731
[2] - https://github.com/openstack/heat/commit/d9d68cf52bd7027e7d1cafd023a399c2a342b2c5

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/176344

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/176344
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=7dfd3c90dbb4368b7c53765617a2e435f680c00f
Submitter: Jenkins
Branch: master

commit 7dfd3c90dbb4368b7c53765617a2e435f680c00f
Author: Andrey Kurilin <email address hidden>
Date: Wed Apr 22 17:49:15 2015 +0300

    Fix usage of novaclient

    Closes-Bug: #1447209

    Change-Id: I25025fbe823ddbfda139c3d8e3dfda982a30e002