title: <p-fileUpload> Change icon on PrimeNG on file upload
body: <p>Is it possible to change the icon on choose button on <a href="https://www.primefaces.org/primeng/#/fileupload" rel="nofollow noreferrer">file upload</a> ?
  In my case it is always "+".</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;p-fileUpload 
    class="btn-primary"
    auto="true"
    mode="basic"
    name="demo[]" 
    chooseLabel="Upload"
    [url]="apiImageLocation" 
    accept="image/*"
    maxFileSize="2000000" 
    (onUpload)="onUploadImageSuccess($event)" 
    (onError)="onUploadImageError($event)"&gt;
  &lt;/p-fileUpload&gt;
  </code></pre>