when we use smart card, we set boot_device to bios to wait agent to do something.But after agent finishes,we need to set boot_device to disk. If we do not do so，when ironic finishes deploy, node will boot to bois. (783134)

when we use smart card, we set boot_device to bios to wait agent to do something.But after agent finishes,we need to set boot_device to disk. If we do not do so，when ironic finishes deploy, node will boot to bois. (783134) · Gerrit Code Review