Add domain_realm mappings to the athena krb5.ini

These seem to be the only bits from the krb5.ini shipped with older
versions of KfW that remain useful.

Signed-off-by: Kevin Wasserman <kevin.wasserman@painless-security.com>

[kaduk@mit.edu: add motivation to commit message]

https://github.com/krb5/krb5/commit/f468fc02ff3b32c12f0f41662a05a9bf07680b87
Author: Kevin Wasserman <kevin.wasserman@painless-security.com>
Committer: Ben Kaduk <kaduk@mit.edu>
Commit: f468fc02ff3b32c12f0f41662a05a9bf07680b87
Branch: master
 src/windows/installer/wix/athena/krb5.ini |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)