Config change needed for koji users running f25 (kerberos authentication failed)

If you are a koji user and are running any commands that require
authentication, a small change will be needed after upgrading to koji
1.11. Simply add:

authtype=ssl

to your koji config (such as in ~/.koji/katello-config). The default in
/etc/koji.conf has been changed to 'kerberos'. If you don't do this
you may start seeing errors such as:

Command output: Kerberos authentication failed: No credentials cache
found (-1765328189)

More information:
https://lists.fedoraproject.org/archives/list/devel-announce@lists.fedoraproject.org/thread/63RXFVPSJ5BAXXCT4NVOBH3WCLCZU7UT/

-Justin