[Telemetry] Un-break 'run_benchmark help run'
[Telemetry] Un-break 'run_benchmark help run'

This CL adds a temporary fix to allow run_benchmark help run to work after the
local environment switchover until we port everything to argparse.

BUG=472916
R=dtu
TEST=run_benchmark help run does not except.

Review URL: https://codereview.chromium.org/1063443002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#323851}

sahiljain/catapult,SummerLW/Perf-Insight-Report,catapult-project/catapult,benschmaus/catapult,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult-csm,catapult-project/catapult,catapult-project/catapult-csm,sahiljain/catapult,benschmaus/catapult,sahiljain/catapult,SummerLW/Perf-Insight-Report,catapult-project/catapult,catapult-project/catapult-csm,SummerLW/Perf-Insight-Report,benschmaus/catapult,catapult-project/catapult,benschmaus/catapult,sahiljain/catapult,catapult-project/catapult,sahiljain/catapult,sahiljain/catapult,benschmaus/catapult,catapult-project/catapult-csm,benschmaus/catapult,catapult-project/catapult-csm,SummerLW/Perf-Insight-Report,SummerLW/Perf-Insight-Report,benschmaus/catapult,catapult-project/catapult-csm,SummerLW/Perf-Insight-Report,catapult-project/catapult-csm