Copyright for python-os-ken source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: os-ken
Source: https://docs.openstack.org/os-ken/latest/
Comment: os-ken is a fork of the ryu project

Files: *
Copyright: 2014 Ryu Project Team ,
           2010-2011 OpenStack LLC,
           2010 United States Government,
           2011-2017 Nippon Telegraph and Telephone Corporation,
           2011-2014 YAMAMOTO Takashi ,
           2014 VA Linux System Japan,
           2013-2014 Isaku Yamahata ,
           2013 Stratosphere Inc.,
           2013 Hewlett-Packard Development Company, L.P.,
           2014 Rackspace Hosting,
           2014 Xinguard, Inc.,
           2016 Bouygues Telecomm,
           2016 Rackspace US, Inc.,
           2016 Fumihiko Kakuma 
License: Apache-2.0

Files: debian/*
Copyright: 2019 Canonical Ltd
License: Apache-2.0

License: Apache-2.0
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
 .
    http://www.apache.org/licenses/LICENSE-2.0
 .
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 .
 On Debian-based systems the full text of the Apache version 2.0 license
 can be found in `/usr/share/common-licenses/Apache-2.0'.