Copyright for maven-parent source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Apache Maven root POM
Source: http://svn.apache.org/repos/asf/maven/pom/trunk/maven/

Files: *
Copyright: 2010, The Apache Software Foundation
License: Apache-2.0

Files: debian/*
Copyright: 2010, Ludovic Claude 
License: Apache-2.0

License: Apache-2.0
  On Debian GNU/Linux system you can find the complete text of the
  Apache-2.0 license in '/usr/share/common-licenses/Apache-2.0'