Show the instance's name of a host or service in the detail view

refs #9945

modules/monitoring/application/views/scripts/show/components/command.phtml

@@ -5,6 +5,10 @@ $command = array_shift($parts);
 
 ?>
 
+<tr class="newsection">
+    <th><?= $this->translate('Instance'); ?></th>
+    <td><?= $this->escape($object->instance_name); ?></td>
+</tr>
 <tr class="newsection">
     <th><?= $this->translate('Command'); ?></th>
     <td>