Fix useless vmware pause/unpause test methods

[Matt Riedemann]

The vmwareapi test class that tests the VMwareESXDriver has a test_pause and test_unpause method that simply passes:

https://github.com/openstack/nova/blob/master/nova/tests/virt/vmwareapi/test_vmwareapi.py#L632

https://github.com/openstack/nova/blob/master/nova/tests/virt/vmwareapi/test_vmwareapi.py#L635

Those APIs aren't supported by the VMwareESXDriver so they should actually test that the code raises NotImplementedError.

https://github.com/openstack/nova/blob/master/nova/virt/vmwareapi/vmops.py#L957

https://github.com/openstack/nova/blob/master/nova/virt/vmwareapi/vmops.py#L961

I think the test class was doing a pass for the esx driver because the test class for the vcdriver extends the esx driver test class, but the method isn't any different for the vcdriver test class so it should just assert it raises NotImplementedError either way.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/50780

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/50780
Committed: http://github.com/openstack/nova/commit/dced1df98e385ebb0615d3789f67d95add49c637
Submitter: Jenkins
Branch: master

commit dced1df98e385ebb0615d3789f67d95add49c637
Author: Matt Riedemann <email address hidden>
Date: Wed Oct 9 16:19:21 2013 -0700

    Make the vmware pause/unpause unit tests actually test something

    The pause/unpause tests for vmware were just passing so this patch
    actually makes them test the pause/unpause methods for the
    VMwareESXDriver and VMwareVCDriver classes.

    Closes-Bug: #1237679

    Change-Id: Idf7c6e6f9542b9ab4dd2ab710597f1a198889dfa