title: Required message not showing for p:fileUpload after using Primefaces 5.0
body: <p>Earlier I used primefaces 3.5 to show required message for p:fileUpload and that time it was showing on my website. As I upgraded to primefaces 5.0 required message for p:fileUpload is not shown. Below is the code :</p>
  
  <pre><code>&lt;h:form id="uploadPForm" class="form-horizontal row-border" enctype="multipart/form-data"&gt; 
  &lt;span&gt;
  &lt;p:messages autoUpdate="false" closable="true" id="msgsuccess" severity="info"/&gt;
  &lt;p:messages autoUpdate="false" closable="true" id="msgerror" severity="fatal,error"/&gt;
  &lt;/span&gt;
  &lt;p:fileUpload id="appUpload" mode="simple"
  required="true requiredMessage="#msg['appUpload.Required']}" 
  value="#{appUploadBean.file}"  style="width:228px;"&gt;        
  &lt;/p:fileUpload&gt;
  &lt;/h:form&gt;
  </code></pre>