Each row in this table stores the DNS records. The Logical_Switch
table's dns_records references these records.
Summary:
records map of string-string pairs
external_ids map of string-string pairs
Details:
records: map of string-string pairs
Key-value pair of DNS records with DNS query name as the
key and value as a string of IP address(es) separated by
comma or space.
Example: "vm1.ovn.org" = "10.0.0.4 aef0::4"
external_ids: map of string-string pairs
See External IDs at the beginning of this document.