[windows] ASO: add support for nftables and BPF dataplanes (on linux nodes)

[coutinhop]

Description

Add support for the nftables and BPF dataplanes on linux nodes to the ASO test infra.

Remove docker installation as only containerd is necessary.

Use a config yaml for kubeadm init instead of CLI flags.

Related issues/PRs

Todos

• Tests
• Documentation
• Release note

Release Note

TBD

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[Copilot]

Pull request overview

This PR enhances the ASO (Azure Service Operator) test infrastructure to support nftables and BPF dataplanes on Linux nodes in addition to the existing iptables dataplane. The changes streamline the cluster initialization process by migrating from command-line arguments to a YAML configuration file for kubeadm, and remove unnecessary Docker installation since only containerd is required.

Changes:

• Added support for configurable Linux dataplanes (Iptables, Nftables, BPF) via environment variables
• Refactored kubeadm initialization to use a YAML configuration file instead of CLI flags
• Removed Docker installation from Linux VM setup, keeping only containerd
• Added gomplate templating for Enterprise Edition storage and custom resource manifests
• Updated Makefile to use marker files for better dependency tracking between setup phases

Reviewed changes

Copilot reviewed 10 out of 12 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
process/testing/aso/linux/init-cluster.sh	Changed to accept kubeadm config YAML file path instead of multiple CLI arguments
process/testing/aso/install-kubeadm.sh	Generates and copies kubeadm config YAML; added KUBE_PROXY_MODE configuration
process/testing/aso/install-calico.sh	Added gomplate templating for manifests; improved shell quoting; added BPF dataplane support with kube-proxy disabling
process/testing/aso/infra/templates/vmss-linux.yaml	Removed Docker installation, keeping only containerd; removed legacy DockerExtension resource
process/testing/aso/export-env.sh	Added CALICO_LINUX_DATAPLANE and KUBE_PROXY_MODE environment variables
process/testing/aso/OSS/templates/custom-resources.yaml	Templated linuxDataplane field to use environment variable
process/testing/aso/Makefile	Updated marker file names and added proper dependencies between kubeadm and calico installation phases
process/testing/aso/EE/templates/storage-class-azure-file.yaml	New template for Elasticsearch storage class configuration
process/testing/aso/EE/templates/persistent-volume.yaml	New template for Elasticsearch persistent volume
process/testing/aso/EE/templates/custom-resources.yaml	Templated linuxDataplane field to use environment variable
process/testing/aso/EE/templates/custom-resources.bgp.yaml	Templated linuxDataplane field to use environment variable
process/testing/aso/.gitignore	Updated to reflect new marker file naming convention and new manifest directories