Add additional drivers to enabled BIOS interface

Add redfish as a BIOS interface to allow retrieving BIOS configuration
using Redfish.  In addition, add idrac-redfish and irmc for future
use.

ironic.conf

@@ -5,6 +5,7 @@ default_boot_interface = ipxe
 default_deploy_interface = direct
 default_inspect_interface = inspector
 default_network_interface = noop
+enabled_bios_interfaces = no-bios,redfish,idrac-redfish,irmc
 enabled_boot_interfaces = pxe,ipxe,fake,redfish-virtual-media,idrac-redfish-virtual-media
 enabled_deploy_interfaces = direct,fake
 # NOTE(dtantsur): when changing this, make sure to update the driver