--- upgrade: - Implementations and dependency on Ironic Python Agent (IPA) lookup/heartbeats as vendor passthru methods is removed from all drivers in ``ironic-staging-drivers`` as it has been deprecated and removed from ironic as well. Effectively, ``AMT``, ``iBoot``, ``Libvirt`` and ``WoL`` drivers no longer have any vendor passthru methods. ``Intel NodeManager`` drivers still have most of their vendor passthru methods related to IPMI and Intel NodeManager-specific extensions, except for ``lookup`` and ``heartbeat`` vendor passthru methods. This also means that drivers in ``ironic-staging-drivers`` are now incompatible with ironic < 6.1.0 and IPA < 1.5.0. On upgrade of ironic-staging-drivers, operators must ensure that their ironic version and verison of IPA in deploy ramdisks is compatible and upgrade those too if needed. Users of custom (non-IPA-based) implementations for lookup/heartbeats from ramdisk are required to update those to use ironic API v1.22.