[tools/perf] Add smoke test for run_benchmark list --json-output command.
[tools/perf] Add smoke test for run_benchmark list --json-output command.

This command is used by perf waterfall bot and has zero coverage.

TBR=aiolos@chromium.org
BUG=467260

Review URL: https://codereview.chromium.org/1408803012

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#358785}

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