Dell Storage Center Driver API bug

[Tom Swanson]

In the Dell REST API for the Storage Center we are logging the volume's index. Index has since become a private attribute. Referencing this produces an exception that foils volume creation.

Switched to instanceId.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/159932

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/159932
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=7da2dff16f2273de9d9d257568b7c7921de695cb
Submitter: Jenkins
Branch: master

commit 7da2dff16f2273de9d9d257568b7c7921de695cb
Author: Tom Swanson <email address hidden>
Date: Fri Feb 27 11:25:38 2015 -0600

    Dell Storage Center Driver API bug

    In later versions of the Dell Storage Center REST API
    the index attribute is removed from the ScVolume object.
    Referencing this caused an exception that failed volume
    creation. Replaced with instanceId.

    Also _init_volume was mapping/unmapping to every server
    that was currently up on the Storage Center rather than
    a single server. While this would certainly initialize
    the volume it would create a lot of extra work on a busy
    system. We now break after the first map/unmap.

    Changed copyright to 2015 to match when it will actually
    be released.

    Change-Id: I89f3967144d7effbb67d1498fc3b4a7a23042a59
    Closes-Bug: 1426463