SEGFirebaseIntegration does not set Crashlytics UserId

[tristan-warner-smith]

The current implementation is: Analytics.setUserID("SomeUserId")

However for Crashlytics to correctly associate crashes with a firebase user you also need to call: Crashlytics.crashlytics().setUserID("SomeUserId")

You can repro this by:

1. Calling .identify(userID, traits: ["email": email])
2. Triggering a crash
3. Checking the Data tab on Crashlytics for the crash event and noting a lack of User.Id

If you set the Crashlytics User Id correctly you'll see the user section shown here (for Android)

[tristan-warner-smith]

Raised against the wrong project.