[AF] Debug flaky sync_integration_tests with more debug info

CL to be reverted once the investigation is over.

Bug: 911953
Change-Id: Iae2e9f4c11ca3a8ecbe04b196c055206aa003b32
Reviewed-on: https://chromium-review.googlesource.com/c/1375731
Commit-Queue: Jan Krcal <jkrcal@chromium.org>
Reviewed-by: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#616294}
1 file changed