These entries will be used for NFS support and
we already test partial support in vz7 version
of criu. So to make images compatible lets reserve
some of them in advance.

CC: Pavel Emelyanov <xemul@virtuozzo.com>
CC: Stanislav Kinsburskiy <skinsbursky@virtuozzo.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>