Title: #117: Make ipa-replica-install run in interactive mode
@simo5: There is a LOT of checking of various combinations of options in
ipa-client-install, not even mentioning IPADiscovery in interactive mode. It
does not make sense to copy-paste all/most of it.
Note that this patch may be obsoleted by the installers refactoring effort as
the ticket was moved to 4.5 release.
See the full comment at
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