Changed name of keytab file in configuration and added xroot server...

Changed name of keytab file in configuration and added xroot server documentation in the latex document

xroot_plugins/xrd.cf.fst

@@ -4,8 +4,8 @@ xrootd.fslib /home/dkruse/CTA/build/xroot_plugins/libXrdProFst.so
 # Use the Kerberos 5 security module
 xrootd.seclib libXrdSec.so
 
-# Using my own hardcoded keytab for the moment
-sec.protocol krb5 /etc/krb5.keytab.dkruse host/<host>@CERN.CH
+# The xroot server process needs to be able to read the keytab file
+sec.protocol krb5 /etc/krb5.keytab.cta host/<host>@CERN.CH
 
 # Only Kerberos 5 is allowed
 sec.protbind * only krb5