Per the CAS Protocol, the /logout endpoint is responsible for destroying the current SSO session. Upon logout,
it may also be desirable to redirect back to a service. This is controlled via specifying the redirect link via
the service parameter.
The redirect behavior is turned off by default, and is activated via the following setting in cas.properties:
# Specify whether CAS should redirect to the specified service parameter on /logout requests
# cas.logout.followServiceRedirects=false
The specified url must be registered in the service registry of CAS and enabled.