Copyright for libcommons-collections4-java source package in Bionic

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Apache Commons Collections
Source: http://commons.apache.org/collections/

Files: *
Copyright: 2001-2015, The Apache Software Foundation
License: Apache-2.0

Files: debian/*
Copyright: 2013, 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'