openafs-client : update kdc servers
These are the new kdc servers deployed recently
kerberos_realm: 'OPENSTACK.ORG'
kerberos_admin_server: 'kdc.openstack.org'
kerberos_kdcs:
- - kdc01.openstack.org
- - kdc02.openstack.org
+ - kdc03.openstack.org
+ - kdc04.openstack.org
- role: openafs-client
