MANTA-590 Turn down native zk client logging.
MANTA-590 Turn down native zk client logging.

josephglanville/manatee,josephglanville/manatee,GrimDerp/manatee,AmlingPalantir/manatee,GrimDerp/manatee,joyent/manatee,AmlingPalantir/manatee,joyent/manatee