Copyright for doxia source package in Mantic

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Maven Doxia
Source: https://github.com/apache/maven-doxia
Files-Excluded: .github

Files: *
Copyright: 2006-2016, The Apache Software Foundation
License: Apache-2.0

Files: debian/*
Copyright: 2007, Trygve Laugstøl 
           2007, Paul Cager 
           2008-2011, Torsten Werner 
           2009, Ludovic Claude 
           2009, Michael Koch 
           2010-2011, Gabriele Giacone <1o5g4r8o@gmail.com>
           2012, Miguel Landaeta 
           2015-2017, Emmanuel Bourg 
License: Apache-2.0

License: Apache-2.0
 On Debian systems, the full text of the Apache-2.0 license
 can be found in the file '/usr/share/common-licenses/Apache-2.0'