[BUG] M1 Mac has an issue with `hostname -I` not being a valid command

Not a particular issue I was facing, but a very offline friend who was using deepspeed initializes got an error where HostName -I isn't available on the M1 chip or OSX in general.

A workaround I can think of is using ifconfig | grep 'inet ' | awk '{print $2}' | paste -sd ' ' instead of hostname -I - and this code fails in ./deepspeed/launcher/runner.py: ssh_check_cmd += f" {first_host} hostname -I" so probably a check for OS type using uname and then running a specific bit of code. Currently I just added a new binary to replace hostname that runs the original hostname but also parses -I to run ifconfig but it probably isn't the best idea.

I am not an AI developer but just my 2 cents!