Backport of VAULT-7698 Fix ignored parameter warnings for endpoint arbitrary data options into release/1.11.x

[hc-github-team-secure-vault-core]

Backport

This PR is auto-generated from #16794 to be assessed for backporting due to the inclusion of the label backport/1.11.x.

The below text is copied from the body of the original PR.

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The changes made to TestHTTP_Wrapping made the test fail before my fix, and this fixes the issue.

The output of an unwrap no longer contains a warning:

vault write -force sys/wrapping/unwrap
Key    Value
---    -----
foo    bar

I could not find any other endpoint that would be appropriate to add TakesArbitraryInput: true to, but it made sense to me to add the new option to the framework instead of simply making an exception for this particular endpoint, which felt messy. It seems likely we'll have need for this boolean in the future.

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Overview of commits

• 0de67d5