Force redo of prompted installation questions where it makes no sense to proceed

[slabgorb]

Description

When a user makes a mistake in the initial configuration, there is no way to recover short of starting over.

Proposal

In the case where a bad answer would break the process, re-ask the question with an appropriate, informational error message

Documentation blurb

Overview

Improve the user experience by allowing fixes to mistaken answers in the installation prompts.

Use cases

Users installing HAOS

[slabgorb]

this may prevent exiting at all -- exiting is probably not a use case, though