Make sure Anitya actually looks at the OpenID errors

This would prevent a redirect loop if the OpenID endpoint
would be broken or unreachable for any of the three
"hardcoded" providers.

Signed-off-by: Patrick Uiterwijk <puiterwijk@redhat.com>
Do we really want to show them to the user or will that be confusing?

Do we want to report them to the maintainers instead?