Detect and configure all usable IP addresses.
Find, verify and configure all IP addresses that can be used to reach the server
FreeIPA is being installed on. Ignore some IP address only if user specifies
subset of detected addresses using --ip-address option.
This change simplyfies FreeIPA installation on multihomed and dual-stacked servers.
https://fedorahosted.org/freeipa/ticket/3575
Reviewed-By: Martin Basti <mbasti@redhat.com>