VNX driver needs additional parameters in create_consistencygroup_from_src

[Tina Tang]

Due to the change of Clone CG, 2 additional parameters are added to "create_consistencygroup_from_src" API in order to support Clone CG.

     https://review.openstack.org/#/c/203473/8/cinder/volume/manager.py

VNX driver need to add those additional parameters in order to support the old function "create consisgroup from cgsnapshot".

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/210319

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/210319
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=dba4844ba59e929808b9b2b03627ba69d5c059e5
Submitter: Jenkins
Branch: master

commit dba4844ba59e929808b9b2b03627ba69d5c059e5
Author: Tina <email address hidden>
Date: Fri Aug 7 00:33:03 2015 -0400

    VNX driver needs extra params for create cg from src

    The cinder manager is passing 2 additional parameters (source_cg and
    source_vols) to create_consistencygroup_from_src of driver. VNX
    driver needs to add these 2 parameters.

    Change-Id: Ibf1ac8955238a27c82b32e1aa728f1efacd71273
    Closes-Bug: #1482571