update

rollout/dev-history.yaml

@@ -164,6 +164,7 @@ rollout:
     - 20-02-16 16:29:37:centerstat-86-3db2ccf179-qianqinbo
     - 20-02-15 20:31:30:centerstat-85-c1586bc518-qianqinbo
     app-exercisebook:
+    - 20-02-19 11:48:13:master-20-d84bbe7715-jiabin
     - 20-02-18 16:18:51:master-19-a590b229a5-jiabin
     - 20-02-18 14:46:34:master-18-857f9b4f31-jiabin
     - 20-02-17 20:18:41:master-17-aa527ca36a-jiabin