from 3.6 (we don’t have an ETA for the release yet) you will be able to set the global config default_boot_interface_link_type.
For example you will be able to set default_boot_interface_link_type=DHCP and have all the interfaces configured to DHCP automatically after commissioning.
For the power configuration by heart I think you should be able to do this by creating a custom commissioning script that is executed AFTER the 30-maas-01-bmc-config and that
- reads the env variable BMC_CONFIG_PATH
- writes a yaml config like here.
If you are going to try this, please report here if it worked