* Make dnsimple_records importable
terraform 0.7 supports importing a resource into the local state, and
this adds that feature to the dnsimple_record resource.
Unfortunately, the DNSimple v1 API requires a domain name and record ID
to fetch a record, so the import command accepts both pieces of data as
a slash-delimted string like so:
terraform import dnsimple_record.test example.com/1234
* add an acceptance test for importing a dnsimple_record
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