Progress incorrect on initial build/resize

[Rick Harris]

In the case of a build, the progress is being returned as None.

In the case of a resize, the progress is initially being returned as 100% (the progress from the last completed action).

The solution is the same in both cases, as with other actions, we should set progress=0 at the beginning of the action.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/4654

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/4654
Committed: http://github.com/openstack/nova/commit/067f0a2d2971ab64ee6fa6f3689fc1158471af18
Submitter: Jenkins
Branch: master

commit 067f0a2d2971ab64ee6fa6f3689fc1158471af18
Author: Rick Harris <email address hidden>
Date: Tue Feb 28 23:14:01 2012 +0000

    Initialize progress to 0 for build and resize.

    Fixes bug 942956

    Change-Id: I65031bcd61b49bcae9bd886d7a9f070cba5caad0