Update .asf.yaml (#2167)

.asf.yaml

@@ -1,4 +1,7 @@
-# Web site staging services:
+staging:
+  profile: ~
+  whoami: master
+  foo: trigger
 
 github:
   description: "Dolphin Scheduler is a distributed and easy-to-extend visual workflow scheduling platform, dedicated to solving the complex dependencies in data processing, making the scheduling system out of the box for data processing.(分布式易扩展的可视化工作流任务调度)"