formula_auditor: audit all relicensed HashiCorp formulae

[ZhongRuoyu]

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same change?
• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes? Here's an example.
• Have you successfully run brew style with your changes locally?
• Have you successfully run brew typecheck with your changes locally?
• Have you successfully run brew tests with your changes locally?

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Apply #15975 to all affected formulae.

[p-linnane]

Awesome job!

[MikeMcQuaid]

Thanks again!

[iMichka]

@ZhongRuoyu wondering about boundary and vagrant: can't find these formulae. How did you create the list?

[ZhongRuoyu]

@ZhongRuoyu wondering about boundary and vagrant: can't find these formulae. How did you create the list?

@iMichka Yes, sorry I must have forgotten to mention this, but: I was aware that these two didn't exist yet, and it was intentional to prevent them from ever being added.

The list is from https://www.hashicorp.com/license-faq#products-covered-by-bsl.