Let's assume that all ipaserver.dsinstance could be used
somewhere where asking questions on stdout/stdin is not
approriate and re-factor the code to be suitable in
those situations too.
i.e. make check_existing_installation() return a list of
server IDs and make check_ports() return an (unsecure,
secure) tuple indication which ports are in use.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Mark McLoughlin
ee7c818bde