[PY3] python3ize schema test

thirsty is specified as a boolean

need to copy the top level of kwargs so that the dictionary does not
changes size during the loop.

salt/utils/schema.py

@@ -515,7 +515,7 @@ class BaseSchemaItemMeta(six.with_metaclass(Prepareable, type)):
                 'Please pass all arguments as named arguments. Un-named '
                 'arguments are not supported'
             )
-        for key in kwargs.keys():
+        for key in kwargs.copy().keys():
             # Store the kwarg keys as the instance attributes for the
             # serialization step
             if key == 'name':

tests/unit/utils/schema_test.py

@@ -2215,7 +2215,7 @@ class ComplexSchemaTestCase(TestCase):
                 as excinfo:
 
             jsonschema.validate(
-                {'complex_complex_item': {'complex_item': {'thirsty': 'Bar'}}},
+                {'complex_complex_item': {'complex_item': {'thirsty': True}}},
                 serialized)
         self.assertIn('\'hungry\' is a required property',
                       excinfo.exception.message)