openstack: Include kube-apiserver controlplane ports in dns=none

[zetaab]

fixes #16270

see discussion (or actually my wall of text) in issue

cc @justinsb @hakman

with this change I can get working kube_env.yaml like following in normal node:

root@nodes-xx-kybe4u:/home/ubuntu# cat /opt/kops/conf/kube_env.yaml 
APIServerIPs:
- 10.2.131.13
- 10.2.192.39
- 10.2.65.84
CloudProvider: openstack
ClusterName: jessetesti.k8s.local
ConfigServer:
  CACertificates: |
    -----BEGIN CERTIFICATE-----
    snip
    TdTyytTpZ/HeOvfbyt6p2qd3I5iaJb2W9Ydo3RROsYAi6p2fMDa/IATzSAQ=
    -----END CERTIFICATE-----
  servers:
  - https://10.2.131.13:3988/
  - https://10.2.192.39:3988/
  - https://10.2.65.84:3988/
InstanceGroupName: nodes-xx
InstanceGroupRole: Node
NodeupConfigHash: HT1Osvmi/hpjF1M1oH8RuCaqyhiO2/D41/wdkQACILE=

% kubectl get nodes
NAME                          STATUS   ROLES           AGE    VERSION
control-plane-xx-t70fjk   Ready    control-plane   106s   v1.29.1
control-plane-yy-1xqslp   Ready    control-plane   116s   v1.29.1
control-plane-zz-mwzfde    Ready    control-plane   112s   v1.29.1
nodes-xx-9e0jht           Ready    node            43s    v1.29.1
nodes-yy-wflops           Ready    node            45s    v1.29.1
nodes-zz-kybe4u            Ready    node            46s    v1.29.1

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[zetaab]

/test pull-kops-e2e-k8s-aws-calico