Add another test stub.

slapos/libnetworkcachetests.py

@@ -281,6 +281,9 @@ class OnlineTest(OnlineMixin, unittest.TestCase):
       self.assertTrue(
         str(msg).startswith("Too many entries for a given key %r"% key))
 
+  def test_DirectoryNotFound_non_trustable_entry(self):
+    raise NotImplementedError
+
 def _run_nc_POST200(tree, host, port):
   server_address = (host, port)
   httpd = Server(tree, server_address, NCHandlerPOST200)