Skip the connection test if test.short is used.
Skip the connection test if test.short is used.

cesanta/serial,tarm/goserial,huin/goserial,jbuchbinder/goserial,haxpax/goserial,BarkingMouseStudio/goserial,johnlauer/goserial,argandas/serial,jmore-reachtech/serial,tarm/serial,vonwenm/goserial,tajtiattila/serial,mvbjrn/goserial