Copyright for maven source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Apache Maven
Source: http://maven.apache.org
Files-Excluded: *.jar

Files: *
Copyright: 2001-2017, The Apache Software Foundation
           2001-2006, The Codehaus Foundation
License: Apache-2.0

Files: debian/*
Copyright: 2007, Paul Cager 
           2009, Ludovic Claude 
           2011-2013, Damien Raude-Morvan 
           2013-2018, Emmanuel Bourg 
           2015-2017, Miguel Landaeta 
           2018, Stephen Kitt 
License: GPL-2

Files: debian/bash_completion.d/maven
Copyright: 2006-2007, Shawn O. Pearce 
           2009, Ludovic Claude 
License: GPL-2

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'.

License: GPL-2
  On Debian GNU/Linux system you can find the complete text of the
  GNU General Public License version 2 license in
  '/usr/share/common-licenses/GPL-2'.