update api ref docs

docs/api-reference/batch/v2alpha1/definitions.html

@@ -3568,7 +3568,7 @@ Populated by the system when a graceful deletion is requested. Read-only. More i
 <tbody>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock">fieldRef</p></td>
-<td class="tableblock halign-left valign-top"><p class="tableblock">Selects a field of the pod: supports metadata.name, metadata.namespace, metadata.labels, metadata.annotations, spec.nodeName, spec.serviceAccountName, status.podIP.</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Selects a field of the pod: supports metadata.name, metadata.namespace, metadata.labels, metadata.annotations, spec.nodeName, spec.serviceAccountName, status.hostIP, status.podIP.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">false</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><a href="#_v1_objectfieldselector">v1.ObjectFieldSelector</a></p></td>
 <td class="tableblock halign-left valign-top"></td>
@@ -5608,7 +5608,7 @@ Examples:<br>
 </div>
 <div id="footer">
 <div id="footer-text">
-Last updated 2017-03-27 13:42:49 UTC
+Last updated 2017-03-28 20:12:14 UTC
 </div>
 </div>
 </body>