dashboard: disable autocomplete for pw field in vm detail

circle/dashboard/templates/dashboard/vm-detail.html

@@ -132,7 +132,7 @@
         <dd>
           <div class="input-group">
             <input type="text" id="vm-details-pw-input" class="form-control input-sm input-tags"
-            value="{{ instance.pw }}" spellcheck="false"/>
+            value="{{ instance.pw }}" spellcheck="false" autocomplete="new-password"/>
             <span class="input-group-addon input-tags" id="vm-details-pw-show"
               title="{% trans "Show password" %}" data-container="body">
               <i class="fa fa-eye" id="vm-details-pw-eye"></i>