IPA-EPN: Test that EPN can be install, uninstalled and re-installed
    
    Verify that no cruft is left over that will prevent reinstallation
    if it is uninstalled.
    
    Reviewed-By: Francois Cami <fcami@redhat.com>
    Reviewed-By: Alexander Bokovoy <abbra@users.noreply.github.com>