added net-tools to debian-based install command

[Kortho]

needed to run the netstat command

[SteveClement]

Which command was missing?

[Kortho]

netstat is used in the start_all.sh
and is not always included in the OS (ubuntu 19.04 for instance)
therefor an install of net-tools includes this command

[Kortho]

"netstat -an |grep LISTEN |grep 6250 |grep -v tcp6 ; check_redis_port=$?
netstat -an |grep LISTEN |grep 8001 |grep -v tcp6 ; check_dashboard_port=$?"

These does not work without net-tools installed :)

[SteveClement]

Cool makes sense

[mokaddem]

Thanks a lot!