include the appid in the cmd line arguments to Executors

core/src/main/scala/org/apache/spark/deploy/worker/ExecutorRunner.scala

@@ -104,7 +104,7 @@ private[spark] class ExecutorRunner(
     // SPARK-698: do not call the run.cmd script, as process.destroy()
     // fails to kill a process tree on Windows
     Seq(runner) ++ buildJavaOpts() ++ Seq(command.mainClass) ++
-      command.arguments.map(substituteVariables)
+      (command.arguments ++ Seq(appId)).map(substituteVariables)
   }
 
   /**

core/src/main/scala/org/apache/spark/executor/CoarseGrainedExecutorBackend.scala

@@ -111,7 +111,7 @@ private[spark] object CoarseGrainedExecutorBackend {
 
   def main(args: Array[String]) {
     if (args.length < 4) {
-      //the reason we allow the last frameworkId argument is to make it easy to kill rogue executors
+      //the reason we allow the last appid argument is to make it easy to kill rogue executors
       System.err.println(
         "Usage: CoarseGrainedExecutorBackend <driverUrl> <executorId> <hostname> <cores> " +
         "[<appid>]")