RequestedAttributes and EntityAttributes

[Rod Widdowson]

Just a note that as far as RequestedAttributes the plumbing in now complete
save

> We may want to optimize that by extending the SAMLMetadataContext to carry
> the effective ACS entry, and we can populate that in an action in the SSO
> profile flows since you have to pull from the AuthnRequest to determine
> it. That's very simple to add, and it's even possible to go beyond the
> spec I suppose, and populate this during queries if we assume the default.

I need to find the right place to pluck the ACS from the entity and plug it
into a AttributeConsumerServiceContext child of the SAMLMetadataContext

Rod