[molecule] other Python3.x fixes

molecule/compat.py

@@ -88,7 +88,7 @@ def convert_to_unicode(obj, enctype = 'raw_unicode_escape'):
         if sys.hexversion >= 0x3000000:
             return "None"
         else:
-            return u"None"
+            return unicode("None")
 
     # int support
     if isinstance(obj, int):

molecule/specs/skel.py

@@ -20,7 +20,7 @@ import os
 from molecule.compat import convert_to_unicode
 import molecule.utils
 
-class GenericSpecFunctions:
+class GenericSpecFunctions(object):
 
     def ne_string(self, x):
         return x, 'raw_unicode_escape'
@@ -144,7 +144,7 @@ class GenericExecutionStep:
         raise NotImplementedError()
 
 
-class GenericSpec(object, GenericSpecFunctions):
+class GenericSpec(GenericSpecFunctions):
 
     EXECUTION_STRATEGY_KEY = "execution_strategy"