[fsmgracoll/agent.py] Add commented debug info

Signed-off-by: Anton D. Kachalov <mouse@yandex-team.ru>
Move away SnmpUdpClient from fsmsock to fsmsnmp

Signed-off-by: Anton D. Kachalov <mouse@yandex-team.ru>
[fsmgracoll/ipmi.py] Do not relogin on stop. Update timeout on stop.

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