bsc/osmo-bsc.cfg: change logging level nm info -> notice

Stop spamming logs with tons of DNM messages (state changes, events).
GSMTAP emits all these messages (including 'debug' ones) anyway.

Related: I49352b3caf9f6bbdd594cfcdea54038fc0eaa874 (docker-playground.git)
Change-Id: I9e60ea0968a44aa29753226626864ac9f4c1f8ab
1 file changed