Add DRA node labeling via unified PodNodeLabel reconciler

Merge DevicePluginPodReconciler and the new DRA pod labeling logic into
a single PodNodeLabelReconciler that handles both roles. The reconciler
watches DaemonSet pods with a ModuleNameLabel, determines the role from
the DaemonSetRole label, and manages the corresponding node label
(device-plugin-ready or dra-ready) based on pod readiness.

Author: TomerNewman

cmd/manager/main.go

@@ -191,8 +191,8 @@ func main() {
 		cmd.FatalError(setupLogger, err, "unable to create controller", "name", controllers.KernelDTKReconcilerName)
 	}
 
-	if err = controllers.NewDevicePluginPodReconciler(client).SetupWithManager(mgr); err != nil {
-		cmd.FatalError(setupLogger, err, "unable to create controller", "name", controllers.DevicePluginPodReconcilerName)
+	if err = controllers.NewPodNodeLabelReconciler(client).SetupWithManager(mgr); err != nil {
+		cmd.FatalError(setupLogger, err, "unable to create controller", "name", controllers.PodNodeLabelReconcilerName)
 	}
 
 	if err = controllers.NewDRAReconciler(client, nodeAPI, scheme).SetupWithManager(mgr); err != nil {