Grab username/domain from a kerberos ticket header

Ok got it ! The two kerberos AAA configuration support pages should really be modified to be more precise and more to the point. They talk about application and and a hostname for the virual server and all !!! really ! I haven't played with keytabs before but coming from KCD setup it just looked confusing whereas all it is about is making apm act like an iis site configured for kerberos. I will update with simpler details/steps when I have time tomorrow.