Updated openstack/openstack
Project: openstack/swift  685f9a8eb02c28dfed483ec295a9fbb9a30c268d
null
Add missing license header to test file

All the other tests have license headers, so this one should too.

I picked 2013 for the copyright year because that's when "git log"
says it was first and last touched.

Change-Id: Idd41a179322a3383f6992e72d8ba3ecaabd05c47