[keycloak-dev] Broker login events

It seems like there's a bit of confusion with regards to what events should be fired when a identity broker login occurs. Initially it was LOGIN and auth_method was used to differentiate how the user authenticated. Then it was changed to IDENTITY_PROVIDER_LOGIN. Now it seems to be back to LOGIN. This is rather messy! Why has it been changed so much? IMO it should as it was initially (LOGIN with auth_method). We also need to make sure identity provider id and sub is included. The latter is missing at the moment.