Add max_rut option to Faker::ChileRut.rut

[hacktivista]

Motivation / Background

Allows to set a maximum RUT number for ChileRut. I needed this because juridical person RUTs start at a higher number than natural person RUTs. I needed to create human RUTs.

Checklist

Before submitting the PR make sure the following are checked:

• This Pull Request is related to one change. Changes that are unrelated should be opened in separate PRs.
• Commit message has a detailed description of what changed and why. If this PR fixes a related issue include it in the commit message. Ex: [Fix #issue-number]
• Tests are added or updated if you fix a bug, refactor something, or add a feature.
• Tests and Rubocop are passing before submitting your proposed changes.
  (test_brazilian_id is failing, but that's not related to my code)

[thdaraujo]

Thanks for working on this. I left some questions as I need more context to be able to review your PR.

I think this generator is a good candidate for a refactor: we've just introduced the PositionalGenerator as an alternative for generating complex values.

Maybe it could make this code a bit easier to read. Let me know if you'd be interested in that! (Or the refactor could also happen in a future PR, no need to do it here).

[thdaraujo]

cool, LGTM!