title: openapi generated Jackson with unknown Value for ENUM
body: <p>I created a rest-api with openapi-codegen. As a parameter there is an object that contains two ENUMs.</p>
  <p>e.g.</p>
  <pre><code>public enum DocumentType {
  FOTO_ID(&quot;PHOTO_ID&quot;);
  [...]
  }
  </code></pre>
  <p>If i send a request with a DocumentType other than &quot;PHOTO_ID&quot; I get the following Response</p>
  <pre><code>Cannot construct instance of `[...]`, problem: Unexpected value '[...]'
  at [Source: (org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$UnCloseableInputStream); line: 2, column: 21] (through reference chain: [...])
  </code></pre>
  <p>which is correct, but i would like to catch it and send my own ErrorResponse.</p>
  <p>I could not find a way to do that.</p>