Pull-request with kerberos token delegation option

[Simo Sorce]

On Mon, 2019-12-09 at 10:26 +0100, AiO wrote:
> Hi all,
> 
> Just wanted to spread the knowledge of a pull-request I've made with some 
> nice server-side improvments on GSSAPI and Kerberos token options to use a 
> credentials cache to store user's tokens. This enables CyrusSASL to not 
> just be an authentication end-point, but also allows for single-sign-on to 
> other services server-side.
> 
> Check it (#586) out - hope it's good-enough for the feature-set addressed.
> 
> Kind regards,
> AiO

I made a review.

-- 
Simo Sorce
RHEL Crypto Team
Red Hat, Inc