Mosquitto ctrl allow dynsec client create without password

[axos88]

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[ralight]

I think this is a good change, thank you. I've made a specific comment on one of the changes. In addition to that, could you please add the new option to the help in dynsec__print_usage()?

If you could also add some entries to test/apps/ctrl/ctrl-dynsec.py in the # Create clients - the valid case, and then the two conflicting cases with the -p option as well that would be great.

Thanks again, this looks useful to me.

[ralight]

You've covered the error case of -p password --no-password, but not --no-password -p password - could you add that check as well please (checking on request_password should do it)

[axos88]

Good catch. Will do in a few days.