How can I make BeforeSuite steps configurable?

I need to do something like the following:

```
BeforeSuite:
Given my db runs at "{{DB_HOST}}"

Scenario:
Given I can reach my api at "{{API_HOST}}"
When I make a request to get all gifts with label "{{GIFT_LABEL}}"
Then I should get at least 1 gift back
```
Then in a BeforeSuite step I want to seed my database, then I can run different scenarios in parallel that depend on the seeded data. I need to have DB_HOST configurable to enable my tests to run across environments (eg. a db deployed locally is going to have a different hostname from a db deployed on Kubernetes).

The issue names no files or tests; start by locating Godog's existing BeforeSuite handling and configuration entry points, then trace how scenarios are coordinated. Done means the shown setup can seed a database with configurable hosts and run dependent scenarios in parallel across local and Kubernetes environments.

Written by the indexing model from the issue text.