Neutron Stadium i18n

• Refer to oslo_i18n documentation for the general mechanisms that should be used: http://docs.openstack.org/developer/oslo.i18n/usage.html
• Each stadium project should NOT consume _i18n module from neutron-lib or neutron.
• It is recommended that you create a {package_name}/_i18n.py file in your repo, and use that. Your localization strings will also live in your repo.