Client install should handle automount unconfigured on uninstall
    
    ipa-client-automount now returns CLIENT_NOT_CONFIGURED when it is
    not configured. Handle this in uninstall().
    
    https://pagure.io/freeipa/issue/7396
    
    Signed-off-by: Rob Crittenden <rcritten@redhat.com>
    Reviewed-By: Tibor Dudlak <tdudlak@redhat.com>