[Fix-10039] Flink run command when perfecting Python jobs (#10042)

* [fix] flink task

* [fix] flink task

dolphinscheduler-task-plugin/dolphinscheduler-task-flink/src/main/java/org/apache/dolphinscheduler/plugin/task/flink/FlinkConstants.java

@@ -50,6 +50,7 @@ public class FlinkConstants {
     public static final String FLINK_MAIN_CLASS = "-c";
     public static final String FLINK_PARALLELISM = "-p";
     public static final String FLINK_SHUTDOWN_ON_ATTACHED_EXIT = "-sae";
+    public static final String FLINK_PYTHON = "-py";
 
     public static final String FLINK_FORMAT_EXECUTION_TARGET = "set execution.target=%s";
     public static final String FLINK_FORMAT_YARN_APPLICATION_NAME = "set yarn.application.name=%s";

dolphinscheduler-task-plugin/dolphinscheduler-task-flink/src/main/java/org/apache/dolphinscheduler/plugin/task/flink/FlinkTask.java

@@ -149,6 +149,10 @@ public class FlinkTask extends AbstractYarnTask {
 
         ResourceInfo mainJar = flinkParameters.getMainJar();
         if (mainJar != null) {
+            // -py
+            if(ProgramType.PYTHON == programType) {
+                args.add(FlinkConstants.FLINK_PYTHON);
+            }
             args.add(mainJar.getRes());
         }