Copyright for htrace source package in Focal

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: htrace
Source: https://github.com/cloudera/htrace
Files-Excluded: htrace-zipkin/src/main/java/com/twitter/zipkin/gen/*
                htrace-hbase/src/main/webapps/static/d3.min.js

Files: *
Copyright: 2012-2013, Jonathan Leavitt 
           2013, Todd Lipcon 
           2013-2014, Elliott Clark 
           2014, Michael Stack 
License: Apache-2.0

Files: debian/*
Copyright: 2015, 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'