---
features:
  - |
    Agent lookup/heartbeat as vendor passthru is removed from most of
    in-tree ironic drivers. Affected drivers are

    * agent_ipmitool
    * agent_ipmitool_socat
    * agent_ipminative
    * agent_irmc
    * agent_ssh
    * agent_vbox
    * agent_ucs
    * pxe_agent_cimc
    * pxe_ipmitool
    * pxe_ipmitool_socat
    * pxe_ssh
    * pxe_ipminative
    * pxe_seamicro
    * pxe_snmp
    * pxe_irmc
    * pxe_vbox
    * pxe_msftocs
    * pxe_ucs
    * pxe_iscsi_cimc
    * pxe_drac
    * pxe_drac_inspector
    * iscsi_irmc
    * agent_ilo
    * iscsi_ilo
    * pxe_ilo
    * agent_pxe_oneview
    * iscsi_pxe_oneview

    All the other vendor passthru methods are left in place if the
    driver had them.