[YUNIKORN-2817] Pods should be deleted according to podspec (#896)

Remove the hardcoded 3s grace period on pod deletions.

Closes: #896

Signed-off-by: Craig Condit <ccondit@apache.org>

pkg/client/kubeclient.go

@@ -138,10 +138,7 @@ func (nc SchedulerKubeClient) Create(pod *v1.Pod) (*v1.Pod, error) {
 }
 
 func (nc SchedulerKubeClient) Delete(pod *v1.Pod) error {
-	gracefulSeconds := int64(3)
-	if err := nc.clientSet.CoreV1().Pods(pod.Namespace).Delete(context.Background(), pod.Name, apis.DeleteOptions{
-		GracePeriodSeconds: &gracefulSeconds,
-	}); err != nil {
+	if err := nc.clientSet.CoreV1().Pods(pod.Namespace).Delete(context.Background(), pod.Name, apis.DeleteOptions{}); err != nil {
 		log.Log(log.ShimClient).Warn("failed to delete pod",
 			zap.String("namespace", pod.Namespace),
 			zap.String("podName", pod.Name),