[RFE] Standardize Exit codes

[sideangleside]

Today we exit with non-zero exit code in the event of an error. Should we consider being more granular with our exit codes:

example, return 2 for 'system already registered' and 3 for 'unsupported puppet version'

[sideangleside]

@evgeni thoughts?

[evgeni]

I think this is a good idea. :+1:

I wonder if we should follow https://github.com/theforeman/hammer-cli/blob/master/lib/hammer_cli/exit_codes.rb (at least where we can)

[gearboxscott]

dilly dilly