volume status is turning to "in-use" right without waiting the actual status in powervc side

[Terry Yao]

In current logic, the waiting logic for the volume is only check the nova os-volume_attachments if it contains the volumes or not, that's wrong, we need to check the actual volume state in powervc side and wait for it's turned to "in-use", then the volume attachment is done at that time

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/141688
Committed: https://git.openstack.org/cgit/stackforge/powervc-driver/commit/?id=9b9d3d05a7ec71733a3cf4ec42d9f2a9ed788bfa
Submitter: Jenkins
Branch: master

commit 9b9d3d05a7ec71733a3cf4ec42d9f2a9ed788bfa
Author: terryyao <email address hidden>
Date: Mon Dec 15 09:45:29 2014 +0800

    Complete volume attachment until volume become to 'in-use'

    1. Move the wait volume state logic from nova to cinder
    2. Wait volume state to be "in-use", then complete volume attachment
    3. Change volume sync code to not sync "attaching" or "detaching" state
    as if sync code change such state, then volume attach/detach will be
    broken

    Closes-Bug: #1402467
    Change-Id: I3640afe9ad4aba8788a932d05e94f55a3b8d6333