@wip getting things together before starting to hammer
Barebones logger to stress test our page-per-things

- pass in `-e` or `environment` to switch environments (defaults to preview as I thought it would be better to accidentally stress preview)
- hits stagecraft to get all of our dashboards, then builds a modules slug list for all of those dashboards
- Doesn't hit `.png` endpoints
- Could do with an accompanying actual smoke test that has a boundary we can peg pass/fail again
- TODO: tables
Merge pull request #50 from alphagov/feature/stress-test-spotlight

Barebones stress test of performance platform module pages