tree ce7917ed552d5c095154f89e516eb5909c9be363
parent 043863ac36e18b3a26c66199edee2cc403d92834
author Chenjie Yu <cjyu@google.com> 1517870268 -0800
committer Chenjie Yu <cjyu@google.com> 1517944306 -0800

puller cache clearing

+ add adb command to manually clear puller cache
+ try to clear puller cache every 10s

Test: manual test
Change-Id: I8005cacd189de1880fcaeb030efbe21e6d3c0244