Bug#930691: s-nail chops off two characters off of the Kerberos hostname when using gssapi auth

[Paride Legovini]

Ivan Vucica wrote on 19/06/2019:
> Hi Steffen,
> 
> Thanks for the quick fix!
> 
> The ticket is now correctly obtained, but the GSSAPI authentication still 
> fails.

Thanks Ivan for the report and Steffen for looking into it. Once you can
confirm the fix is working I'll do my best to have it released in Buster.

Paride