fix importerror in decorator

Author: edoput

tests/airos/test_wpasupplicant.py

@@ -135,7 +135,7 @@ def test_wpa2_personal(self):
         for (a, b) in zip(o.intermediate_data['wpasupplicant'], expected):
             self.assertEqual(a, b)
 
-    @unittest.skip("target wpa2_enterprise later")
+    @skip("target wpa2_enterprise later")
     def test_wpa2_enterprise(self):
 
         o = self.backend({