The UCS C240-M4SX servers require the pxe_iscsi_cimc enabled in ironic.conf, other drivers such as the pxe_ipmi won't work. If configuring instackenv.json with this driver it will fail with "unknown pm_type" so we need to create the nodes in ironic completely manually in the undercloud.
Moving to a correct target.
Driver is not python 3 compatible. Waiting for vendor (Cisco) to update libraries.