add quantum tag and quantum version as nvp tag to quantum elements

[Aaron Rosen]

We should be adding tags on lswitches/lports/lrouters,etc noting that this was created via quantum and the quantum version for added trouble shooting and to allow us to maybe ignore resources created outside of quantum.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/22637

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/22637
Committed: http://github.com/openstack/quantum/commit/e001a8dac7c557a786528924e4992b5b9875a271
Submitter: Jenkins
Branch: master

commit e001a8dac7c557a786528924e4992b5b9875a271
Author: Aaron Rosen <email address hidden>
Date: Thu Feb 21 15:31:31 2013 -0800

    Add string 'quantum'/ version to scope/tag in NVP

    This patch adds scope='quantum', tag=QUANTUM_VERSION to each element
    created in NVP via quantum. This patch also removes the function
    set_tenant_id_tag() as it was only used in one place and wasn't very useful.

    Fixes bug 1128674

    Change-Id: I9f1f8e9b49154012a82d24e31cc9fb7f2df9c604