title: Get values for parameters from remote API in cloudformation
body: <p>We have a remote API (not AWS) from which we can read values for parameters.
  Can we read those values in cloudformation and use them as values?</p>
  
  <p>Or is the only possible way to get the values and provide them by using the <code>aws cli</code> and passing the values as values of parameters in a deploy commmand.</p>