Updated openstack/openstack
Project: openstack/ceilometer  dfb783f159df9d25b273f8a43891bba25eebdd80
null
Fix missing source field content on /v2/samples API

Also fix example Sample in API doc

Closes-Bug: #1282176

Change-Id: I322aa57c0e8f83f9b220cf544378eb5e183df134