Use username & password (from env vars) for Mongo (#336) #43

All 293 tests pass, 20 skipped in 5m 43s

    2 files ±0   20 suites ±0 5m 43s ⏱️ +3s
313 tests ±0 293 ✔️ ±0 20 💤 ±0 0 ❌ ±0
316 runs ±0 296 ✔️ ±0 20 💤 ±0 0 ❌ ±0

Results for commit 025f6b6. ± Comparison against earlier commit 51b8ad7.