Add two new parameters. The first is to add a line to the krb5.conf file
indicating that we prefer TCP. The other is a parameter stating which
kerberos environment we want: prod, test, or uat.

Some changes (such as the major changes to WIN.SLAC.STANFORD.EDU) were not
copied to the template file.

This is the (old) master branch along with the fixes to the
cron file permissions that Russ made.