To mention..we are using Eureka and so does not have the option for 'primary' idp.

Found the below on the wiki which is exactly what I want, but I want to do this prior to upgrade from Eureaka..any thoughts?:

12.1 Fuji

• Provides a property to identify a primary identity provider. The primary IdP is used automatically for all users if they try to access the base URL of the instance.