Some write endpoints return crucial data, but vault write-secret! throws it away

[kenrestivo-stem]

write-secret returns only a boolean if the status code is 204.

Some endpoints, such as PKI write-secret, return 200 error codes with vital information (like private keys) that can't be obtained any other way.

(vault/write-secret! @v/client "pki_int/issue/foo-dot-com" {"common_name" "foo.com"})

Returns false.

Correct return value in this case would be the :body of the response.