- Update library version.
- Added MaxFlush delay to help reduce CPU usage.
- Fall back to LRU cache for the caches which use SCAN.
- Added mattermost-redis and running for all api layer
tests in Postgres.
https://mattermost.atlassian.net/browse/MM-59934
```release-note
NONE
```
* configure Loki for local development
Extend our docker compose setup to include Loki (along with promtail), scraping `logs/*.log` to ingest development logs as well as all logs from running containers.
While we're in here, teach Prometheus to scrape metrics from Docker containers too.
* tweak promtail labels
* document extra services in config.mk
* update home.json
