Update requirements.md to make 8GB the minimum instance size
I spun up a test instance on DO that had a fresh 10.8.4 install. It refused to load unicorn until I shut off:
- alertmanager
- prometheus
- redis-exporter
- node-exporter
- gitlab-monitor
I think we should make the default reccomentation 8GB based on that.
@axil I assigned to you, but let me know if this needs to go somewhere else.