Copyright for diskcache source package in Mantic

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

Files: *
Copyright: 2016-2021 Grant Jenks
License: Apache-2.0

Files: debian/*
Copyright: 2021 Andreas Tille 
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, version 2.0
 can be found in /usr/share/common-licenses/Apache-2.0.