Implement UX changes for initialize

[misohu]

Why it needs to get done

Implement the proposed changes by UX team for the initialize command. More information is in the spec.

What needs to get done

1. Implement the changes in error messages
2. Implement the changes for options
3. Implement integration and unit tests
4. Test on Microk8s.

When is the task considered done

1. Changes are implemented
2. Changes are tested

[syncronize-issues-to-jira]

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The internal ticket has been created: https://warthogs.atlassian.net/browse/KF-5526.

This message was autogenerated

[misohu]

This one is blocked until we implement purge functionality (#34) as one of the flags uses the purge functionality.

[misohu]

Further changes:

• Dss initilize should be a blocking command which will only succeed when everything is properly deployed.
• This command will not have timeout.
• This command should return non zero exit code on failure.
• This command should have an --purge parameter which wiil first purge the dss and the initialize it.