Improve dnsrecord-add interactive mode
When an invalid record type is entered during dnsrecord-add
interactive mode, user is provided with a list of allowed values
(record types). However, the provided list contains also
unsupported record types (APL, DHCID, etc.) and any attempt to add
such records would end with error. This patch limits the list
to supported record types only.
https://fedorahosted.org/freeipa/ticket/2378