perform IPA client uninstallation as a last step of server uninstall
    
    With the ability to promote replicas from an enrolled client the
    uninstallation procedure has to be changed slightly. If the client-side
    components are not removed last during replica uninstallation, we can end up
    with leftover ipa default.conf preventing future client re-enrollment.
    
    https://fedorahosted.org/freeipa/ticket/5410
    
    Reviewed-By: Martin Basti <mbasti@redhat.com>
    Reviewed-By: Jan Cholasta <jcholast@redhat.com>