chroot: add weston-launch group

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
chroot: factor out locale setup, with debian needs to be UTF-8 option

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
configs: (weekly) bump default kernel versions

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>