remove hp3parclient requirement from unit tests

[Mark Sturdevant]

In order to eliminate the need to have the hp3parclient in the global-requirements project, we need to remove the hp3parclient from being imported in all 3par driver unit tests in cinder.

It should _at least_ be optional for the tests.

[Openstack Gerrit (openstack-gerrit)]

Fix proposed to branch: master
Review: https://review.openstack.org/92266

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/92266
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=541cc9d53ac999535edcb7a02d1a76a883cfb02b
Submitter: Jenkins
Branch: master

commit 541cc9d53ac999535edcb7a02d1a76a883cfb02b
Author: Mark Sturdevant <email address hidden>
Date: Mon May 5 14:13:48 2014 -0700

    eliminate the need for hp3parclient in tests

    In order to eliminate the need to have the hp3parclient in the
    global-requirements project, we need to remove the hp3parclient
    from being imported in all 3par driver unit tests in cinder.

    Closes-Bug: #1315195
    Change-Id: Ife5c70871e742be5970be8f0284e12554f93cab4