Comment 7 for bug 1999134

Reviewed: https://review.opendev.org/c/openstack/tripleo-ansible/+/883470
Committed: https://opendev.org/openstack/tripleo-ansible/commit/73ccd0a8ab25156192f46dcd4791bcbb01ec2db5
Submitter: "Zuul (22348)"
Branch: stable/wallaby

commit 73ccd0a8ab25156192f46dcd4791bcbb01ec2db5
Author: Yamato Tanaka <email address hidden>
Date: Thu Dec 8 19:40:29 2022 +0900

    fix to be able to edit ns_records of /etc/designate/pools.yaml

    As the RFC 1034 mentions, parent's NS records and child's NS records
    must be the same.
    For example:

      Parent:
        parent.example.com. SOA ......
        child NS nameserver1.child.parent.example.com.
        child NS nameserver2.child.parent.example.com.
        child NS nameserver3.child.parent.example.com.

      Child:
        child.parent.example.com. SOA ......
              NS nameserver1.child.parent.example.com.
              NS nameserver2.child.parent.example.com.
              NS nameserver3.child.parent.example.com.

    Currently, ns_records of /etc/designate/pools.yaml always start with
    nsX and are not changeable. To make them the same as parent's NS
    records, we have to be able to change ns_records to any value.

    As ns_records should end with ".", this change makes sure that it ends
    with ".".

    Partial-Bug: 1999134
    Change-Id: Id4466cfb01cf69dca06c56f4cd03146d8e38d363