[perf] mark timeouts as failures even when retried successfuly

When retries succeed, the perfrunner masks the timeouts.

This CL exposes those failures.

R=sergiyb@chromium.org

Bug: chromium:841700
Change-Id: Ia69a191e84fd994bd25deb2d7019f7acf11db45c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1602695Reviewed-by: Sergiy Belozorov <sergiyb@chromium.org>
Commit-Queue: Tamer Tas <tmrts@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61384}

tools/run_perf.py

@@ -1105,9 +1105,8 @@ def Main(argv):
                 break
 
               attempts_left -= 1
-              if not attempts_left:  # ignore failures until last attempt
-                have_failed_tests = True
-              else:
+              have_failed_tests = True
+              if attempts_left:
                 logging.info('>>> Retrying suite: %s', runnable_name)
 
           if runnable.has_timeouts: