Update test case to use unicode index names.

Author: makmanalp

pandas/tests/io/test_pytables.py

@@ -2924,10 +2924,10 @@ def test_store_index_name_numpy_str(self):
         # GH #13492
         idx = pd.Index(pd.to_datetime([datetime.date(2000, 1, 1),
                                        datetime.date(2000, 1, 2)]),
-                       name='cols')
+                       name=u('cols\u05d2'))
         idx1 = pd.Index(pd.to_datetime([datetime.date(2010, 1, 1),
                                         datetime.date(2010, 1, 2)]),
-                        name='rows')
+                       name=u('rows\u05d0'))
         df = pd.DataFrame(np.arange(4).reshape(2, 2), columns=idx, index=idx1)
 
         # This used to fail, returning numpy strings instead of python strings.