Uninstall: stop sssd-kcm before removing KCM ccaches database
    
    The service is socket-activated and will be restarted whenever
    needed. It must be stopped before the database is removed
    otherwise it fails to recreate the file.
    
    Fixes: https://pagure.io/freeipa/issue/9616
    Signed-off-by: Florence Blanc-Renaud <flo@redhat.com>
    Reviewed-By: Rob Crittenden <rcritten@redhat.com>