add parameter to change 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, there are no parameters to edit ns_records of
/etc/designate/pools.yaml. To make them the same as parent's NS
records, we have to have a parameter to configure ns_records.

Partial-Bug: 1999134
Depends-On: Id4466cfb01cf69dca06c56f4cd03146d8e38d363
Change-Id: I97c4f7c4785dba4ea5485ccc8d4a6d0531e0d791

ci/environments/scenario003-standalone.yaml

@@ -28,6 +28,10 @@ parameter_defaults:
   NotifyPort: 5672
   ContainerCli: podman
   DesignateBackendListenIPs: ["192.168.24.20"]
+  DesignateBindNSRecords:
+    - test1.example.com.
+    - test2.example.com.
+    - test3.example.com.
   ExtraFirewallRules:
     '301 allow arbitrary tcp rule':
       dport: 12345

deployment/designate/designate-central-container-puppet.yaml

@@ -71,6 +71,12 @@ parameters:
     type: string
     default: ''
 
+  DesignateBindNSRecords:
+    description: >
+      Used to configure NS records and SOA record of zones managed by
+      designate with bind servers managed
+    type: comma_delimited_list
+    default: ['ns1.example.org.', 'ns2.example.org.', 'ns3.example.org.']
   DesignateRndcKey:
     description: The rndc key secret for communication with BIND.
     type: string
@@ -230,6 +236,7 @@ outputs:
               name: designate_bind_pool
           vars:
             alternate_bind: true
+            designate_bind_pool_ns_records: {get_param: DesignateBindNSRecords}
             designate_rndc_key: {get_param: DesignateRndcKey}
             minidns_proxy_base_port: {get_param: DesignateMdnsProxyBasePort}
             tripleo_external_bind_servers: {get_param: DesignateExternalBindServers}