feat(executor-manager): 增加表数据查询10条采样任务

service-forest/src/main/java/com/lanyuanxiaoyao/service/forest/service/TaskService.java

@@ -28,6 +28,9 @@ public interface TaskService {
     @Get(value = "/task/table_summary", readTimeout = 2 * 60 * 1000)
     String tableSummary(@Query("hdfs") String hdfs);
 
+    @Get(value = "/task/table_sampling", readTimeout = 2 * 60 * 1000)
+    String tableSampling(@Query("hdfs") String hdfs);
+
     @Get("/task/results")
     ImmutableList<String> results(@Query("task_id") String taskId);