rancher-monitoring: Add compatibility to IPv6 only clusters

[fayak]

Problem

Our cluster is IPv6 only. Having nginx listening only on IPv6 breaks the svc. This allows both ipv4 and v6

Solution

listen additionally on ipv6

Testing

Tested on our cluster with success

[github-actions]

Validation steps

• Ensure all container images have repository and tag on the same level to ensure that all container images are included in rancher-images.txt which are used by airgap customers.

  Ex:- 
    longhorn-controller:
      repository: rancher/hardened-sriov-cni
      tag: v2.6.3-build20230913
  

• Add a 👍 (thumbs up) reaction to this comment once done. CI won't pass without this reaction to the github-action bot's latest validation comment.
• Approve the PR to run the CI check.

[nicholasSUSE]

Hello @fayak
Is this Pull Request still relevant?
Can I close it?

[github-actions]

Validation steps

• Ensure all container images have repository and tag on the same level to ensure that all container images are included in rancher-images.txt which are used by airgap customers.

  Ex:- 
    longhorn-controller:
      repository: rancher/hardened-sriov-cni
      tag: v2.6.3-build20230913
  

• Add a 👍 (thumbs up) reaction to this comment once done. CI won't pass without this reaction to the github-action bot's latest validation comment.
• Approve the PR to run the CI check.

[fayak]

@nicholasSUSE Closed in favor of #3465 which is still relevant :)