[fsmipmi/proto] _process_next_cmd: stop on empty cmds

Signed-off-by: Anton D. Kachalov <mouse@yandex-team.ru>
Add `fsmipmi' script

Signed-off-by: Anton D. Kachalov <mouse@yandex-team.ru>
Add ipmitool-like script

Signed-off-by: Anton D. Kachalov <mouse@yandex-team.ru>