Updated openstack/openstack
Project: openstack/nova  fb8e4f9a35999195ac4925ff87874b93e783977a
null
Nova Docker driver must remove network namespace

The docker hypervisor creates for each container a network
namespace which represents the nova network. This network
namespace must be removed/destroyed when nova instance will
be destroyed in order to cleanup the machine properly.

Change-Id: I6fa306d06fb16f8ceddb06e22566974237082759
Closes-Bug: 1261007