/usr/share/doc/libvirt-bin/AUTHORS.gz is in libvirt-bin 0.9.8-2ubuntu17.23.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libvirt-bin/../libvirt0/AUTHORS.gz
/usr/share/doc/libvirt-bin/../libvirt0/AUTHORS.gz