Updated openstack/openstack
Project: openstack/tempest  78376aa3e62c7c2e2b9c7c22ddd4d4b5f64111e7
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Do not assert router l3 agent association

Just be removing the router from an agent, we does not prevent
neutron to reschedule the router to the same agent.

Since on dvsm gate we has only one l3 agent, it is the only scheduling
choose.

Closes-Bug: #1291694
Change-Id: Idf7d184d2493fef7f6faa17f0d95c1c9f853dfb1