locking: use & install test_libvirt_sanlock.sug for both QEMU & LibXL
The RPM specfile was referencing test_libvirt_sanlock.aug in the common
file list, for both QEMU and LibXL. This makes sense since the
sanlock.conf file is cloned for both drivers. The libvirt_sanlock.aug
file, however, was missing a reference to the LibXL copy of the config.
Reviewed-by: Martin Kletzander <mkletzan@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>