Add clusterCIDR to Hetzner CCM Helm Chart networking configuration

[sshcherbinin]

Fix for #1861

[gemini-code-assist]

Summary of Changes

Hello @sshcherbinin, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the configuration of the Hetzner Cloud Controller Manager (CCM) Helm chart by introducing the clusterCIDR setting. This addition ensures that the Kubernetes cluster's IPv4 CIDR range is explicitly passed to the CCM's networking configuration, resolving a previously identified issue and improving network management within Hetzner-based Kubernetes deployments.

Highlights

• Hetzner CCM Configuration: The clusterCIDR parameter has been added to the networking configuration within the Hetzner Cloud Controller Manager (CCM) Helm chart values.
• Issue Resolution: This change specifically addresses and fixes issue [Bug]: hcloud-cloud-controller-manager HELM chart uses default cluster-cidr 10.244.0.0/16 #1861, likely related to network configuration within Hetzner-managed Kubernetes clusters.

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[gemini-code-assist]

Code Review

This pull request adds the clusterCIDR configuration to the Hetzner Cloud Controller Manager (CCM) Helm chart values. This is a necessary fix to ensure proper network routing for pods when the CCM is installed via Helm, aligning its behavior with the manifest-based installation. The change is correct, but I've suggested a minor improvement for consistency and robustness in the YAML configuration.

[mysticaltech]

Thanks @sshcherbinin