[SSSD] [PATCH] Delete cached ccache file if password is expired

[Sumit Bose]

Hi,

this patch should fix https://fedorahosted.org/sssd/ticket/888 which
describes a corner case where an unused ccache file with a random name
is not recreated during the renewal of an expired password via sshd with
privilege separation.

I have tried to think of a situation where it might be a bad idea to
remove the on-disk ccache file but found none.

bye,
Sumit