Copyright for avalon-framework source package in Bionic

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Apache Avalon
Source: http://excalibur.apache.org

Files: *
Copyright: 1997-2004, The Apache Software Foundation
License: Apache-2.0
Comment:
 Upstream authors: Federico Barbieri ,
                   Charles Benett ,
                   Peter Donald ,
                   Pierpaolo Fumagalli ,
                   Serge Knystautas ,
                   Roberto Lo Giacco ,
                   Berin Loritsch ,
                   Stefano Mazzocchi ,
                   Leo Simons 

Files: debian/*
Copyright: 2001, Takashi Okamoto 
License: Apache-2.0

Files: debian/poms/*
Copyright: The Apache Software Foundation
License: Apache-2.0

License: Apache-2.0
 On Debian systems the full text of the Apache Software License version
 2.0 can be found in the `/usr/share/common-licenses/Apache-2.0' file.