SYSDB: Remove the timestamp cache for a newly created cache
As many users are used to remove the persistent cache without removing
the timestamp cache, let's throw away the timestamp cache in this case.
Resolves:
https://fedorahosted.org/sssd/ticket/3128
Signed-off-by: Fabiano FidĂȘncio <fidencio@redhat.com>
Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>