factory_install: Fix sync timing issue on partition reloading.
Calling "sync" may need some extra time to schedule a sync system call.
We should leave some seconds before reloading partition table.
BUG=chrome-os-partner:9610
TEST=(x86) Zero /dev/sda, reboot, restart and completed factory install.
Change-Id: I449e9d62ac9f17850842025a1a210b8ff7c3a74c
Reviewed-on: https://gerrit.chromium.org/gerrit/22568
Tested-by: Hung-Te Lin <hungte@chromium.org>
Commit-Ready: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Rong Chang <rongchang@chromium.org>
1 file changed
