change test to slider for disk create

app/UI/Disk/Forms/UpdateForm.php

@@ -67,9 +67,10 @@ class UpdateForm extends BaseForm implements ClientArea
             $vm->getHardDisks()
         );
 
-        $field = new Range('additionalDiskSize', 20, $this->resourceManager->disk()->free());
+        $field = new Text('additionalDiskSize');
+//        $field = new Range('additionalDiskSize', 20, $this->resourceManager->disk()->free());
         $field->addValidator(new DiskSizeValidator('additionalDiskSize',true));
-        $field->setDefaultValue(20);
+//        $field->setDefaultValue(20);
         $this->addField($field);
         /**
          * @todo $resourceManager->disk()->free() + current disk size