fix: BREAKING put karpenter_ignored_pod_count metric under scheduler subsystem (#2015)

Co-authored-by: Jonathan Innis <[email protected]>

Author: olegy2008

pkg/controllers/provisioning/scheduling/metrics.go

@@ -74,7 +74,8 @@ var (
 		crmetrics.Registry,
 		prometheus.GaugeOpts{
 			Namespace: metrics.Namespace,
-			Name:      "ignored_pod_count",
+			Subsystem: schedulerSubsystem,
+			Name:      "ignored_pods_count",
 			Help:      "Number of pods ignored during scheduling by Karpenter",
 		},
 		[]string{},