#15872: Some more Windows related tuning to shutil.rmtree tests

Turns out, the snakebite bots have also their peculiarities.

I'm really not proud of this stream of commits. :(

Lib/test/test_shutil.py

@@ -172,11 +172,10 @@ class TestShutil(unittest.TestCase):
         filename = os.path.join(tmpdir, "tstfile")
         with self.assertRaises(NotADirectoryError) as cm:
             shutil.rmtree(filename)
-        if cm.exception.filename.endswith('*.*'):
-            rm_name = os.path.join(filename, '*.*')
-        else:
-            rm_name = filename
-        self.assertEqual(cm.exception.filename, rm_name)
+        # The reason for this rather odd construct is that Windows sprinkles
+        # a \*.* at the end of file names. But only sometimes on some buildbots
+        possible_args = [filename, os.path.join(filename, '*.*')]
+        self.assertIn(cm.exception.filename, possible_args)
         self.assertTrue(os.path.exists(filename))
         # test that ignore_errors option is honored
         shutil.rmtree(filename, ignore_errors=True)
@@ -189,11 +188,12 @@ class TestShutil(unittest.TestCase):
         self.assertIs(errors[0][0], os.listdir)
         self.assertEqual(errors[0][1], filename)
         self.assertIsInstance(errors[0][2][1], NotADirectoryError)
-        self.assertEqual(errors[0][2][1].filename, rm_name)
+        self.assertIn(errors[0][2][1].filename, possible_args)
         self.assertIs(errors[1][0], os.rmdir)
         self.assertEqual(errors[1][1], filename)
         self.assertIsInstance(errors[1][2][1], NotADirectoryError)
-        self.assertEqual(errors[1][2][1].filename, rm_name)
+        self.assertIn(errors[1][2][1].filename, possible_args)
+
 
     # See bug #1071513 for why we don't run this on cygwin
     # and bug #1076467 for why we don't run this as root.