Backport of Improve consul secrets plugin error for failed bootstrap into release/1.14.x

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

Backport

This PR is auto-generated from #20891 to be assessed for backporting due to the inclusion of the label backport/1.14.x.

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

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When returning a logical error, we need to include all of the information the user should see within the response. As seen in #18705, there is currently no indication of why the bootstrapping failed when it does.

Before:

$ vault write consul/config/access \
    address="https://127.0.0.1:8500"
Error writing data to consul/config/access: Error making API request.

URL: PUT http://127.0.0.1:8200/v1/consul/config/access
Code: 400. Errors:

* Token not provided and failed to bootstrap ACLs

After:

$ vault write consul/config/access \
    address="https://127.0.0.1:8500"
Error writing data to consul/config/access: Error making API request.

URL: PUT http://127.0.0.1:8200/v1/consul/config/access
Code: 400. Errors:

* Token not provided and failed to bootstrap ACLs: Put "https://127.0.0.1:8500/v1/acl/bootstrap": http: server gave HTTP response to HTTPS client

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Overview of commits

• 657ee31