Fix k8s client class in SparkSubmit

Author: ash211

core/src/main/scala/org/apache/spark/deploy/SparkSubmit.scala

@@ -99,7 +99,7 @@ object SparkSubmit extends CommandLineUtils with Logging {
   private[deploy] val REST_CLUSTER_SUBMIT_CLASS = classOf[RestSubmissionClientApp].getName()
   private[deploy] val STANDALONE_CLUSTER_SUBMIT_CLASS = classOf[ClientApp].getName()
   private[deploy] val KUBERNETES_CLUSTER_SUBMIT_CLASS =
-    "org.apache.spark.deploy.k8s.submit.KubernetesClientApplication"
+    "org.apache.spark.deploy.k8s.submit.Client"
 
   // scalastyle:off println
   private[spark] def printVersionAndExit(): Unit = {