change ds model case3_1

examples/dsntp/case3_1/flow3_1.csv

-FLOW ID,是否启用,名称,触发条件,触发条件参数,,
-60131,TRUE,ds_case3_1,Manual,,,
+FLOW ID,是否启用,名称,触发条件,触发条件参数,存储模式,
+60131,TRUE,ds_case3_1,Manual,,Memory,
 ,,,,,,
 ,,,,,,
 FLOW ID,节点ID,名称,节点类型,参数,,
 FLOW ID,节点ID,名称,节点类型,参数,,
 60131,1,input,SOURCE_URL,https://shufengdong.github.io/sparrowzz/examples/dsntp/case3_1/input.csv,,
 60131,1,input,SOURCE_URL,https://shufengdong.github.io/sparrowzz/examples/dsntp/case3_1/input.csv,,