Make IGNORE work with all providers (#313)
Make IGNORE work with all providers (#313)

the `differ.matchIgnored` function was comparing only with the `Name`
field of `RecordConfig`.

Most providers don't set `RecordConfig.Name`, only `RecordConfig.NameFQDN`
and for those `IGNORE` doesn't work at all.

This patch converts `IGNORE` to use `NameFQDN` instead since it seems
all providers provides it.
StackExchange/dnscontrol,StackExchange/dnscontrol,StackExchange/dnscontrol