title: With serverless framework, how to replace cognito user pool instead of update?
body: <p>I am using serverless framework to manage my AWS resources. Now I want to replace my cognito user pool to update the config of alias, username attributes, etc.</p>
  
  <p>I have:
  - changed the config of cognito user pool resource in .yml
  - changed the cognito user pool name and client name</p>
  
  <p>But on deploy, I got the error:
  <code>Updates are not allowed for property - UserPoolName.</code></p>
  
  <p>where I was expected that this should lead to an replacement, not update.</p>
  
  <p>What have I missed?
  Thanks.</p>