Adjust Host and Hosts Consumption Pattern

[ctjnkns]

The Hosts data source: AWS has a pattern I like, where the thing data source returns the details of thing and the things data source returns only a set of IDs. Users who want "a thing" can get it thing via the singular data source, and users who want "all things" can get all of them by for_each-ing over the result of the plural data source. Add some filters (which can be implemented using the existing model) and you've got a really flexible consumption pattern for your users.