REP-819 Keystone V3 Filter

The mess that is Keystone v3! Comment on _everything_ so we can get this fixed up. =)
The only reason lazy was included is that it make testing easier in the beginning. I realize that it wasn't necessary or even beneficial (in fact, I'd rather read config values early since they /could/ change if someone messed with the configuration bean) to label these values as lazy. I was probably just being lazy and didn't remove them. =)