nats: Don't enable debug and trace logging by default

Only enable trace and/or debug logging when the outer logger has the
log level set accordingly. Even when the though the messages where not
really logged the nats service wasted quite some cycles especially in
the trace log related code path.

Related issue: #716

services/nats/pkg/command/server.go

@@ -78,7 +78,7 @@ func Server(cfg *config.Config) *cli.Command {
 			}
 			natsServer, err := nats.NewNATSServer(
 				ctx,
-				logging.NewLogWrapper(logger),
+				logger,
 				nats.Host(cfg.Nats.Host),
 				nats.Port(cfg.Nats.Port),
 				nats.ClusterID(cfg.Nats.ClusterID),