Reconsider changing some INFO to DEBUG output

[lichtin]

I'd like to suggest following two INFO output

2014-12-22 16:14:36,264 [Poller-inucdev3] INFO net.schmizz.sshj.connection.channel.direct.SessionChannel 100 - Will request to exec ps

2014-12-22 16:14:36,639 [Poller-inucdev3] INFO net.schmizz.sshj.common.StreamCopier 139 - 0.08203125 KiB transferred in 0.359 seconds (0.22849930362116994 KiB/s)

be turned into diagnostics (DEBUG).
It'd be nice to be able to stick with the default level (INFO) for net.schmizz.sshj, but this is only possible if there's no output during "normal" operations.