Move the enum error handling in model utils

Author: therve

.generator/templates/model.mustache

@@ -4,7 +4,6 @@ import re  # noqa: F401
 import sys  # noqa: F401
 
 from {{packageName}}.model_utils import (  # noqa: F401
-    ApiValueError,
     ApiTypeError,
     ModelComposed,
     ModelNormal,

.generator/templates/model_templates/method_init_simple.mustache

@@ -56,11 +56,7 @@
         self._configuration = _configuration
         self._visited_composed_classes = _visited_composed_classes + (self.__class__,)
         self._unparsed = False
-        try:
-	    self.value = value
-        except ApiValueError:
-            self.__dict__['value'] = value
-            self._unparsed = True
+        self.value = value
         if kwargs:
             raise ApiTypeError(
                 "Invalid named arguments=%s passed to %s. Remove those invalid named arguments." % (

.generator/templates/model_templates/method_set_attribute.mustache

@@ -36,11 +36,12 @@
                 value, required_types_mixed, path_to_item, self._spec_property_naming,
                 self._check_type, configuration=self._configuration)
         if (name,) in self.allowed_values:
-            check_allowed_values(
-                self.allowed_values,
-                (name,),
-                value
-            )
+            try:
+		check_allowed_values(self.allowed_values, (name,), value)
+            except ApiValueError:
+                self.__dict__["_data_store"][name] = value
+                self._unparsed = True
+                return
         if (name,) in self.validations:
             check_validations(
                 self.validations,