Enable drivers for domain-specific configuration files

To enable domain-specific drivers, set these options in the /etc/keystone/keystone.conf file:

[identity]
domain_specific_drivers_enabled = True
domain_config_dir = /etc/keystone/domains

When you enable domain-specific drivers, Identity looks in the domain_config_dir directory for configuration files that are named as keystone.DOMAIN_NAME.conf. Any domain without a domain-specific configuration file uses options in the primary configuration file.