instance directory naming update to use uuid

[Yaguang Tang]

The VMware Hyper still use instance-000000xx template to name instance directory. which will face the same problem that libvirt
faces. so change the directory naming of VMware Hyper.

[dan wendlandt (danwent)]

if you are going to change the name of the instance directory, we should probably change the name of the instance itself as well. This is the primary means by which the VM is identified for later changes, as the driver does not store any vCenter UUIDs.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/31593

[Shawn Hartsock (hartsock)]

We were just discussing this in a VMwareAPI team meeting last week. We wanted the name of the instance in vCenter to be the UUID instead of the hidden ID number. Using instance-000000xx as the instance name actually exposes implementation details from inside OpenStack to vCenter (and that's a bad thing). I would like this to be part of a larger patch that addressed both issues.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/31593
Committed: http://github.com/openstack/nova/commit/e517e5668ab20214432e06ef87f7b16776edaf7c
Submitter: Jenkins
Branch: master

commit e517e5668ab20214432e06ef87f7b16776edaf7c
Author: Yaguang Tang <email address hidden>
Date: Wed Jun 5 15:16:16 2013 +0800

    Naming instance directory by uuid in VMware Hyper.

    Like Libvirt Hyper, Using EC2 template for naming instance
    directory may cause conflict. we follow what Libvirt does to use
    instance uuid instead of EC2 template naming. To keep backwards
    compability, when fails to find a instance by uuid, fall back to use
    EC2 name.

    Fix bug #1186944

    Change-Id: Iaba099225a9b3b0390cae4c5fbd82d7e6c11f0e0

[Shawn Hartsock (hartsock)]

I want to see this back ported. This is the right way for the driver to work.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/grizzly
Review: https://review.openstack.org/38043

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/38043
Committed: http://github.com/openstack/nova/commit/7ad1db6140c49c85ba643a6217878ef8f3d30463
Submitter: Jenkins
Branch: stable/grizzly

commit 7ad1db6140c49c85ba643a6217878ef8f3d30463
Author: Yaguang Tang <email address hidden>
Date: Wed Jun 5 15:16:16 2013 +0800

    Naming instance directory by uuid in VMware Hyper.

    Like Libvirt Hyper, Using EC2 template for naming instance
    directory may cause conflict. we follow what Libvirt does to use
    instance uuid instead of EC2 template naming. To keep backwards
    compability, when fails to find a instance by uuid, fall back to use
    EC2 name.

    Fix bug #1186944

    (cherry picked from commit e517e5668ab20214432e06ef87f7b16776edaf7c)

    Conflicts:

     nova/tests/vmwareapi/db_fakes.py
     nova/virt/vmwareapi/vmops.py

    Change-Id: Iaba099225a9b3b0390cae4c5fbd82d7e6c11f0e0