Use irate instead of rate for schedulerThroughput metric (#410)

* Initial plan

* Update schedulerThroughput metric to use irate instead of rate

Co-authored-by: rsevilla87 <4614641+rsevilla87@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: rsevilla87 <4614641+rsevilla87@users.noreply.github.com>
Co-authored-by: Raúl Sevilla <rsevilla@redhat.com>
Co-authored-by: vishnuchalla <28471457+vishnuchalla@users.noreply.github.com>

Author: 3 people

cmd/config/metrics-profiles/metrics.yml

@@ -100,7 +100,7 @@
 # Scheduler
 
 # Scheduler Throughput: Successful pod placements per second
-- query: sum(rate(scheduler_schedule_attempts_total{result="scheduled"}[2m]))
+- query: sum(irate(scheduler_schedule_attempts_total{result="scheduled"}[2m]))
   metricName: schedulerThroughput
 
 # Scheduler P99 Latency: Time taken for the end-to-end scheduling algorithm..