title: AWS IAM consistency issue
body: <p>I'm using Hashicorp vault for creating users with the AWS Secrets-Engine.
  I have an issue using the AWS credentials I get, probably because it takes time for all the AWS servers to be updated with the newly created user, as it stated <a href="https://docs.aws.amazon.com/IAM/latest/UserGuide/troubleshoot_general.html#troubleshoot_general_eventual-consistency" rel="nofollow noreferrer">here</a>
  <a href="https://i.stack.imgur.com/p2E8r.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/p2E8r.png" alt="enter image description here"></a>
  I'm using Hashicorp Vault for creating AWS users in runtime, and use the credentials I get immediately. In practice, there could be a delay of up to a few seconds until I can actually use them. Besides performing some retry mechanism, I wonder if there is a real solution to this issue or at least a more elegant solution</p>