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To debug testRunPerformanceTestsTelemetrySharded_end2end, add more
information and a better formatted output to help figure out the
cause of problems when things go wrong.

Also re-enable the test on linux to see if previous failures reoccur.

Bug: 996003
Change-Id: I86ed6ca3c03943674bc77483688ea24fa5193225
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1886680Reviewed-by: Caleb Rouleau <crouleau@chromium.org>
Commit-Queue: Juan Antonio Navarro Pérez <perezju@chromium.org>
Cr-Commit-Position: refs/heads/master@{#711673}