Fix stripping of extraneous fields since totalEntries now appears first in the JSON

[cjwbath]

Rackspace appear to have changed the order of fields in the JSON responses so totalEntries field now appears before record, e.g.
{"totalEntries":XX,"records":[{"id":"aaaaaaaaa-aaaaaaaaaa-aaaaaaaa","name":"example.com","type":"A","data":"10.1.1.1","ttl":3600,"updated":"2021-12-13T10:47:23.239Z","created":"2021-10-28T15:29:46.763Z"},...]}

The existing code scripts used in get_domains and get_records then fail to strip the field names properly when processing the data. In the case of get_records this causes the very first record to be mangled - the extra comma that remains confuses AWK column selection.

This is a quick fudge to make it work again. There is probably a more elegant way to fix it once and for all if field order changes again.