If OpenStackID returns failure user will be shown failure message.
Steps to check:
Setup RefStack as usual but point REFSTACK_HOST=127.0.0.1. It will
cause OpenStackID auth failure. So try to auth and you should get
error message in popup (instead of plain json document as it was before).
Change-Id: Icda5b219429047e89b393245a3a6eeadf171bd90