When I'm testing on dev, I want to test that a datacenter's config is working. Currently, I can only specify my config on a per-datacenter basis. That leads to my config having a lot of duplication and redundancy.
common.json
development.json
development.datacenter.json
production.json
production.datacenter.json
It'd be nice to add support for common.datacenter.json in order to reduce the need of duplicating configuration.