provide larger scale integration test for metrics test

[glorv]

Feature Request

Is your feature request related to a problem? Please describe:

afte #256 metrics configs are maintained in this repo, when new pr change the metrics, reviewer may need to run a integration test and look at the related charts on grafana to verify the correctness. So we need to provide a larger scale test suite to generate enough metrics.

Describe the feature you'd like:

Describe alternatives you've considered:

Teachability, Documentation, Adoption, Optimization:

[kennytm]

Plan:

1. Generate a W=150 TPC-C sample (size ~12 GB) or SF=10 TPC-H sample (size ~10 GB)
2. Run Lightning.
3. Verify.