Copyright for ubuntu-keyring source package in Bionic

This is Ubuntu GNU's GnuPG keyrings of archive keys.

This package was originally put together by Michael Vogt
 

The keys in the keyrings don't fall under any copyright.  Everything
else in the package is covered by the GNU GPL.

Ubuntu support files Copyright (C) 2004 Michael Vogt  based on the debian-keyring package maintained by James Troup 

Ubuntu support files for ubuntu-keyring are free software; you can
redistribute them and/or modify them under the terms of the GNU
General Public License as published by the Free Software Foundation;
either version 2, or (at your option) any later version.

Ubuntu support files for ubuntu-keyring are distributed in the hope
that they will be useful, but WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE.  See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License with
your Ubuntu system, in /usr/share/common-licenses/GPL, or with the
Ubuntu GNU ubuntu-keyring source package as the file COPYING.  If not,
write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
Floor, Boston, MA 02110-1301 USA.