Copyright for netty-tcnative source package in Mantic

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Netty Tomcat Native
Source: https://github.com/netty/netty-tcnative/
Files-Excluded: docker/*
                .mvn
                mvnw*

Files: *
Copyright: 2004-2014, The Apache Software Foundation
           2014-2018, The Netty Project
License: Apache-2.0

Files: debian/*
Copyright: 2015-2018, Emmanuel Bourg 
License: Apache-2.0

Files: debian/native-build/m4/jni.m4
Copyright: 2009-2011, FuseSource Corp.
License: Apache-2.0
Comment:
 This file comes from the hawtjni package.

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'