(merge 3.2) test_os: add TemporaryFileTests to the testcase list

The testcase was never executed, it's now fixed.

diff --cc Lib/test/test_os.py
index 5f39f64340de1f6c30828f36626e4c4f533099b2,0866593f07789bbf75068cb242892fd7b820ea5c..98a21298fd186118602681aba27aba3b711c4bee
--- 1/Lib/test/test_os.py
--- 2/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@@ -1630,8 -1344,7 +1630,9 @@@ def test_main()
          PidTests,
          LoginTests,
          LinkTests,
 +        TestSendfile,
 +        ProgramPriorityTests,
+         TemporaryFileTests,
      )
  
  if __name__ == "__main__":