Backport vault 1.12.x to prevent overwrite of schema and password_policy

[elliesterner]

… config (#75)

Overview

A high level description of the contribution, including: Who the change affects or is for (stakeholders)? What is the change? Why is the change needed? How does this change affect the user experience (if at all)?

Related Issues/Pull Requests

• [ ] Issue #1234
• [ ] PR #1234

Contributor Checklist

• [ ] Add relevant docs to upstream Vault repository, or sufficient reasoning why docs won’t be added yet
• [ ] Add output for any tests not ran in CI to the PR description (eg, acceptance tests)
• [ ] Backwards compatible