ff7a32bc7f
When fast track mode is used, ironic still waits for the next heartbeat before running the first clean step, because prepare_cleaning unconditionally returns CLEANWAIT for agent drivers. This patch fixes it by returning None for fast-track. Agent code then needs to refresh clean steps before proceeding, otherwise it will assume an empty steps list. Change-Id: I86225b3e34c63a0124a2a63f8a624dd00a8d38e4