title: Change <p-dropdown> value in protrator
body: <p>I am new to protractor, I wish to change the value in my dropdown.  But my dropdown is implemented using p-dropdown of primeNG.  Current implementation in changing dropdown values is done in a plain select - option menu.</p>
  
  <p>Here is my code for the </p>
  
  <pre><code>         &lt;div class="ui-g-12 ui-md-12 ui-lg-2" *ngIf="listOfName" style="margin-top: 10px;"&gt;    
                  &lt;p-dropdown [options]="listOfName" [(ngModel)]="marketID" [autoWidth]="true" [style]="{'width':'100%'}" filter="true" id="markers"&gt;
                      &lt;ng-template let-name pTemplate="item"&gt;
                          &lt;div class="ui-helper-clearfix"&gt;{{name.label}}&lt;/div&gt;
                      &lt;/ng-template&gt;
                  &lt;/p-dropdown&gt;
              &lt;/div&gt;   
  </code></pre>
  
  <p>Now I wish to change the value using Protractor.  How to do that? </p>