title: DateTimeFormatter is not working with ofPattern nor OFFSET
body: <p>I try to format a Datestring to OffsetDateTime with the Java buildIn DateTimeFormatter. My DateTimeFormatter does not work as expected.</p>
  
  <p>The String is: "2018-11-12T14:55:17 +0100"</p>
  
  <pre><code>DateTimeFormatter.ofPattern("yyyy-MM-dd'T'hh:mm:ssZ");
  DateTimeFormatter.ofPattern("yyyy-MM-dd'T'hh:mm:ssZZZZZ");
  DateTimeFormatter.ISO_OFFSET_DATE_TIME;
  </code></pre>
  
  <p>I expected, that with the DateTimeFormater I will get a proper OffsetDateTime. may one can help me out of this situation?</p>