CAS-1451: Align ticket cleaner & logout mgmr's SLO

https://issues.jasig.org/browse/CAS-1451
It all really depends on how seriously we're taking these as public APIs and what our contract is to our clients.  From a proper release standpoint, what I asked for would technically be the "correct" thing.  Its a bit heavy-handed though and we may need a looser definition of "correct" :-)