title: How do I add a boolean OR to cognito-idp list-user's --filter option
body: <p>Currently, I can get a user in the user pool by specifying their username like so:</p>
  <pre><code>aws cognito-idp list-users --user-pool-id  xxx --filter 'username=&quot;ABC&quot;'
  </code></pre>
  <p>However, what do I do if I want to get both user &quot;ABC&quot; and user &quot;DEF&quot;? Is it possible to add a boolean OR to the filter string?</p>
  <p>Something like</p>
  <pre><code>aws cognito-idp list-users --user-pool-id  xxx --filter 'username=&quot;ABC&quot; or username=&quot;DEF&quot;'
  </code></pre>