bpo-40275: Use new test.support helper submodules in tests (GH-21412)

diff --git a/Lib/test/test_glob.py b/Lib/test/test_glob.py
index f815852..96db31b 100644
--- a/Lib/test/test_glob.py
+++ b/Lib/test/test_glob.py
@@ -4,8 +4,8 @@
 import sys
 import unittest
 
-from test.support import (TESTFN, skip_unless_symlink,
-                          can_symlink, create_empty_file, change_cwd)
+from test.support.os_helper import (TESTFN, skip_unless_symlink,
+                                    can_symlink, create_empty_file, change_cwd)
 
 
 class GlobTests(unittest.TestCase):