Set public distribute group access

[MorneAppenate]

We currently use HockeyApp to distribute test builds of our application to testers. These testers don't have a Microsoft account and forcing them to create one before testing would result in many of them just not bothering.

There is an option in the web platform to enable public access:

The issue is that this requires us to manually do it which doesn't work well with our current build processes where everything is automated.

Is it possible that this feature can be incorporated into the CLI? It's the main blocker stopping us from moving over to App Center from HockeyApp. Something like appcenter distribute groups update --set-public true/false would be perfect.