Some of the things that should be tested are
1. Use Kerberos to provide SSO to the Hardware/Servers running OpenStack
2. Use Kerberos/LDAP for Keystone
3. Use Dogtag to provision certificates for HTTPS, Postgresql, AMQP
4. Use Kerberos/GSSAPI to Authenticate for Postgresql, AMQP
This bug has been incorporated in BZ1010308, so I am closing this bug as a duplicate as there is more info in BZ1010308.
*** This bug has been marked as a duplicate of bug 1010308 ***