DeprecationWarning: Using the 'enforce_type' argument is deprecated in
version '4.0' and will be removed in version '5.0': The argument
enforce_type has changed its default value to True and then will be
removed completely."
Change-Id: Iaf9d04f9ee3e07aaecff8bfb5621d69e35722f42
See: https://review.openstack.org/#/c/328692/