Fix uninstall stopping ipa.service
    
    When uninstalling systemd is told to disable the service, but it is not
    told to sopt it, so it believes it is still running. This can cause
    issues in some cases if a reinstall is performed right after an
    uninstall, as systemd may decide to stop the disabled service while we
    are reinstalling, causing the new install to fail.
    
    https://fedorahosted.org/freeipa/ticket/5959
    
    Signed-off-by: Simo Sorce <simo@redhat.com>
    Reviewed-By: Jan Cholasta <jcholast@redhat.com>