raise better exception for duplicate matches

[Aaron Rosen]

Currently the client rasies exceptions.NeutronClientException if a duplicate match is found. This makes it hard for programs using the client to know what error actually occured.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/36703

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/36703
Committed: http://github.com/openstack/python-neutronclient/commit/04178517bcccf41e78ec2623b8db954921c84f48
Submitter: Jenkins
Branch: master

commit 04178517bcccf41e78ec2623b8db954921c84f48
Author: Aaron Rosen <email address hidden>
Date: Thu Jul 11 10:54:59 2013 -0700

    raise better exception for duplicate match

    When a duplicate match is found the client previously raised a
    NeutronClientException which made it hard for programs using the client
    to handle errors. This patch now makes it raise a
    NeutronClientNoUniqueMatch exception instead.

    Fixes bug: 1200323

    Change-Id: I6ef6f9a9e257104f676dde7ec26be98417ec70e0