Local SSO integration with IdP 5.1.1

[Cantor, Scott]

> How about an entry in the transition map from authn/External to catch 
> NoCredentials (which for me is the "usual" case of no special SSO 
> cookies present) that runs a next flow strategy function that 
> clears/overwrites whatever is getting passed to Password 
> (AuthenticationError/WarningContext? Spring event?)?

The event should not be messed with. I don't think that the others would be there, but if they are then yes, they could be cleared or removed without hurting anything.

-- Scott