test(e2e): Add support for credential rotation in minio buckets

[moduli]

This PR adds support for credential rotation when using minio storage buckets (it is similar to #4718, but for minio instead of aws).

• It adds the appropriate permissions to the user to be able to generate new credentials
• It adds a variable to pass to the test suite in order to validate that credentials are cleared when the storage bucket is deleted AND credential rotation was enabld.

There will be a follow-up PR in boundary-enterprise to add the associated tests.