Set Property shibConfig for Service Provider in Apache VirtualHost

[Cantor, Scott]

Mostly it's [1] that contains the overview of the distinctions in the software between physical and logical portions of the system and how to handle it in the configuration. V3 simply adds an additional way to avoid defining overrides for the most common scenario.

-- Scott

[1] https://wiki.shibboleth.net/confluence/display/SP3/ApplicationModel