tast reports server, only report the last version of the test result

kinda a bit of a yikes if there ever is a case of intentionally repeated
tests in the same exec, but its also required to support retries. Long
term we still should pull tast retries out of harness, into TR to decide
when/where to use them

BUG=b:270193958
TEST=cq, unit.

Change-Id: I4afae9efafa3741ea220c01bb7c778e84ddd41e6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/4278666
Commit-Queue: Chris DeLaGarza <cdelagarza@google.com>
Tested-by: Derek Beckett <dbeckett@chromium.org>
Commit-Queue: Azizur Rahman <azrahman@google.com>
Reviewed-by: Azizur Rahman <azrahman@google.com>
Reviewed-by: Chris DeLaGarza <cdelagarza@google.com>
Auto-Submit: Derek Beckett <dbeckett@chromium.org>
2 files changed