title: Multiple validation groups in an Angular form group
body: <p>I want some specific validations in a form and I cannot find an elegant way of doing so. Let's say I have a field, that can satisfy one of a few groups of validation constraints to be valid? The specific validation for a password I want is:</p>
  
  <ul>
  <li>required</li>
  <li>max length 256 characters</li>
  <li>min length 10 characters</li>
  <li>Requires at least one integer</li>
  <li>Requires at least one symbol</li>
  <li>Requires at least one capital letter</li>
  </ul>
  
  <p>OR</p>
  
  <ul>
  <li>required</li>
  <li>max length 256 characters</li>
  <li>min length 32 characters</li>
  </ul>
  
  <p>I want validation to accept either of these groups for the same field. Is there an elegant way to do this with angular forms?</p>