Updated openstack/openstack
Project: openstack/neutron  af64e9522be1e26005471968ff4fef80c143635b
null
Call _destroy_metadata_proxy from _destroy_router_namespaces

Refactor _spawn/destroy_metadata_proxy so that it can be called
with only the namespace and the router_id.

Change-Id: Id1c33b22c7c3bd35c54a7c9ad419831bfed8746b
Closes-Bug: #1252856