
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Adding summary metric for scheduling latency **What this PR does / why we need it**: Re-introduces histogram metrics for the backward compatibility. Changes SchedulingLatency metric to satisfy prometheus best practice. ref #64316 **Release note**: ```release-note NONE ```