DNS Record.fromZoneRecord_ doesn't handle multiple records correctly (MX)

[timwsuqld]

Environment details

• OS: Linux
• Node.js version: 4.2.6
• npm version: 3.5.2
• google-cloud-node version: 0.6.2

Steps to reproduce

When importing zone files (bind format) using zone.import, we call Record.fromZoneRecord_ on each line. However, when you have multiple of the same record that should in be a single result set (i.e. MX records), it actually creates a record set per line, which doesn't result in the correct zone being created.

The resourceRecordSets rrdatas should be a list (https://cloud.google.com/dns/api/v1/resourceRecordSets#resource) of all the records, not multiple resourceRecordSets. The result is only the last MX record is imported.

This would probably also cause problems if for example you have multiple TXT records, or multiple A records.

[stephenplusplus]

This issue was moved to googleapis/nodejs-dns#8