Copyright for golang-github-google-subcommands source package in Bionic

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: subcommands
Source: https://github.com/google/subcommands

Files: *
Copyright: Copyright 2016 Google Inc. All Rights Reserved.
License: Apache-2.0

Files: debian/*
Copyright: 2017 Nobuhiro Iwamatsu 
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 systems, the complete text of the Apache License 2.0 can 
 be found in "/usr/share/common-licenses/Apache-2.0".