Syslog logback approach

[ghost]

Not sure if this test can be automated, but we need to understand how to get the container configured to activate the syslog logback, then test that a remote system can receive the packets. (A positive test in some environment is probably enough here.)

[ghost]

Relevant: https://github.com/Unicon/shibboleth-idp-dockerized/blob/master/opt/shibboleth-idp/conf/logback.xml