message: Fix for list and dict serialization
diff: @@ -295,7 +295,7 @@ namespace AutoRest.Python
  }
  else
  {
  - innerTypeName = innerType.Name.Else("str");
  + innerTypeName = GetPythonSerializationType(innerType);
  }
  return "[" + innerTypeName + "]";
  }
  @@ -312,7 +312,7 @@ namespace AutoRest.Python
  }
  else
  {
  - innerTypeName = innerType.Name;
  + innerTypeName = GetPythonSerializationType(innerType);
  }
  return "{" + innerTypeName + "}";
  }
  