[tests] Add Python3 test run

Add testrun to also verify Python3 functionality.

+ Immediately fix a Python3 incompatibility.

see #23

tests/test_config.py

@@ -13,6 +13,6 @@ class TestConfig(unittest.TestCase):
     def test_load_simple_modules(self):
         cfg = Config([ "-m" ] + self.someSimpleModules)
         self.assertEquals(cfg.modules(), 
-            map(lambda x: { "name": x, "module": x }, self.someSimpleModules))
+            list(map(lambda x: { "name": x, "module": x }, self.someSimpleModules)))
 
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