Where to specify which ACS to use for logging in?

[Cantor, Scott]

> Of the 2279 entities with an IdP role in InCommon metadata, zero of
> them have a SAML2 HTTP-Artifact endpoint. I must be missing something.

Inbound artifact support is not the same as supporting use of them outbound. The former relies on endpoints with that binding, the latter relies on an inbound ArtifactResolutionService (and it actually working).

-- Scott