[Telemetry] Fix examples/run_benchmark
[Telemetry] Fix examples/run_benchmark

This was broken but fixed in my check_independent CL which I later reverted
because we ended up not using the command.

Case study for the value of splitting up CLs. :)

BUG=catapult:#3070
TBR=nednguyen

Review-Url: https://codereview.chromium.org/2553683009

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