Copyright for ehcache source package in Nile V2.0

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Ehcache distributed cache library
Upstream-Contact: Terracotta, Inc.
Source: https://svn.terracotta.org/svn/ehcache/tags/
Files-Excluded: *.jar
                src/site

Files: *
Copyright: 2003-2014 Terracotta, Inc.
License: Apache-2.0

Files: debian/*
Copyright: 2007, Arnaud Vandyck
           2007-2009, Varun Hiremath
           2008-2010, Torsten Werner
           2010, Thierry Carrez
           2012, Miguel Landaeta
           2013-2020, Emmanuel Bourg
License: Apache-2.0

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