Update sample rule to flush cached data to disk.
Update sample rule to flush cached data to disk.

nzlosh/st2,nzlosh/st2,nzlosh/st2,nzlosh/st2,StackStorm/st2,Plexxi/st2,StackStorm/st2,StackStorm/st2,Plexxi/st2,Plexxi/st2,Plexxi/st2,StackStorm/st2