500 error when deleting a router which is associated with VPNService

[Nachi Ueno]

500 error when deleting a router which is associated with VPNService

This should be 409 error.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/46158

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/46158
Committed: http://github.com/openstack/neutron/commit/df1d4ca3d5c9158468866f7145a18ca46cd92e18
Submitter: Jenkins
Branch: master

commit df1d4ca3d5c9158468866f7145a18ca46cd92e18
Author: Nachi Ueno <email address hidden>
Date: Wed Sep 11 16:24:13 2013 -0700

    Fix error code for deletion of router which is in use by vpnservice

    In this commit, we check router is in use by a vpnservice or not when
    we delete router.

    Fixes bug 1224174

    Change-Id: I55a4b9b93715fbb36816c69729d88eb494bcf15e