fixes #702 increase tcp_shutdown back to 120 secs
fixes #702 increase tcp_shutdown back to 120 secs

reqshark/nanomsg,featherweight/ftw-kernel-nanomsg,snikulov/nanomsg,thisco-de/nanomsg,snikulov/nanomsg,featherweight/ftw-kernel-nanomsg,reqshark/nanomsg,reqshark/nanomsg,thisco-de/nanomsg