Add the upn to event.user

When writing an action, it would be great if we could access the upn property from waad (windows azure active directory) users.

Description: Currently we have to lookup this value using the mgmt api, but it should be provided in the event context for speed + convience.

Use-case: I’m building a user link action, using the PostLoginAction, and currently have to do some work-arounds to do the linking since the upn is not included by default.

Thanks a lot for sharing that feature request!