vmware compute driver retrieves the cluster reference for every spawn and volume operation

[Ananth]

The vmware compute driver retrieves the cluster reference for every spawn and volume operation.
The solution is to retrieve the reference once from the __init__() of vmwareapi/driver.py and reuse the same in other methods. This will reduce the number of VI SDK calls made.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/24405

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/24405
Committed: http://github.com/openstack/nova/commit/6b4729a58f7c2fb0fb9e31628f4be7d7678c9cad
Submitter: Jenkins
Branch: master

commit 6b4729a58f7c2fb0fb9e31628f4be7d7678c9cad
Author: divakar-padiyar-nandavar <email address hidden>
Date: Thu Mar 14 00:30:02 2013 -0600

    Use Cluster reference to reduce SDK calls

    The vmware compute driver retrieves the cluster reference
    for every spawn and volume operation. The solution is to
    retrieve the reference once from the __init__() of
    vmwareapi/driver.py and reuse the same in other methods.
    This will reduce the number of VI SDK calls made.

    Fix for bug 1130222

    Change-Id: I2179733ee4ab1b2aea919de0ad4c10631cf005ea