troubleshooting attribute release for idp 3.3.3

[Peter Schober]

* Pablo Vidaurri <psvidaurri at gmail.com> [2018-08-25 02:37]:
> How can I troubleshoot attribute resolution and filtering?

Add one of the following to your logback config and reload the logging
service (`bin/reload-service.sh -id shibboleth.LoggingService`).
Start with running only the resolver on DEBUG. Once you're sure the
data is available disable DEBUG logging in the resolver and enable it
for the filter:

<logger name="net.shibboleth.idp.attribute.resolver" level="DEBUG"/>

<logger name="net.shibboleth.idp.attribute.filter" level="DEBUG"/>

-peter