Fix crontab to avoid filling root mailspool

* Redirect to /dev/null to avoid massive mail spool

Change-Id: I165ea41d27bb2707080021944ed4795a30e9f59b
make filesystem_store_datadir configurable

Change-Id: Ieb8af766855d0e2df47b6138b18521fd4d924076
Merge "make filesystem_store_datadir configurable"
make Image Cache settings configurable: cache_dir, stall_time, grace_period

Change-Id: I512d7a28068854c66807d1290f1e8700ebb54332
Merge "make Image Cache settings configurable: cache_dir, stall_time, grace_period"