Allow retry telemetry login in another process.

Instead of retry telemetry login in a thread, add a options to retry
telemetry login in another process.

BUG=chrome-os-partner:28209
TEST=manually run reboot test for 60 times

Change-Id: Iefce77d42b4dbf7700a366fef0633b01d0f0d34c
Reviewed-on: https://chromium-review.googlesource.com/196758
Reviewed-by: Justin Chuang <jchuang@chromium.org>
Tested-by: Ricky Liang <jcliang@chromium.org>
Commit-Queue: Ricky Liang <jcliang@chromium.org>
1 file changed