[Wilt Chamberlain] Add severity configs to custom data tests

[drewbanin]

Feature

Feature description

This is a nice-to-have if it's easy to implement. Custom data tests should be configurable with a severity as with schema tests.

I'm imagining:

{{ config(severity='warn') }}

select ...

Though I'm not certain how configs work with custom data tests currently. If this is involved, then we should do it in a future release.

Who will this benefit?

custom data test users

[beckjake]

This actually already works if you do:

{{ config(severity='WARN') }}

But dbt is very particular about the casing. Is that all you want me to do, fix that?

[drewbanin]

yes! That's awesome :)

Sure, if you don't mind making it case-insensitive and adding a test, then I think we can call this one a Feature 🌟