Miscellaneous changes to kernel driver test CICD jobs.

[shankarseal]

Description

This PR makes the following changes:

• Change the setup script to enable HVCI before installing duonic. Empirical evidence suggests that duonic installation was failing post enabling HVCI. No causality has been established. This is merely a workaround to make forward progress.
• It sets fail-fast: false for the native only tests strategy matrix, so that failure in one flavor does not cancel the other.
• It re-enables XDP tests to be run conditionally.
• Refactor some functions so that setup/execution on local host, VM and remote VM share maximum code.
• Removes some dead code from the scripts.
• Additional logging.

Testing

This makes changes to the kernel driver test jobs.

Documentation

No documentation changes.

Installation

No installation changes.

[dthaler]

• It removes the EnableHVCI flag from the driver native only tests. This change was made as there is empirical evidence that this flag introduced flakiness to the tests depending on the duonic tool.

Does this mean there's no way to test with HVCI enabled without introducing test failures? Is there an issue filed to track this?

[shankarseal]

• It removes the EnableHVCI flag from the driver native only tests. This change was made as there is empirical evidence that this flag introduced flakiness to the tests depending on the duonic tool.

Does this mean there's no way to test with HVCI enabled without introducing test failures? Is there an issue filed to track this?

Not necessarily. I am removing this to stabilize the pipeline ahead of the major release. We will work in parallel to sort this out.
[edit]. The order of commands to enable HVCI and installing duo NIC have been swapped. HVCI is still enabled.

[Copilot]

Pull Request Overview

This PR makes miscellaneous improvements to kernel driver test CICD jobs to reduce flakiness and improve reliability.

• Removes the EnableHVCI flag from driver native only tests due to empirical evidence of flakiness
• Adds fail-fast: false strategy to prevent one matrix flavor failure from canceling others
• Re-enables conditional XDP tests execution

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
.github/workflows/cicd.yml	Removes EnableHVCI flag and adds fail-fast: false to driver native tests
.github/workflows/reusable-build.yml	Adds continue-on-error to nuget cache step
scripts/vm_run_tests.psm1	Adds RunXdpTests parameter and conditional XDP test execution
scripts/execute_ebpf_cicd_tests.ps1	Passes through RunXdpTests parameter
scripts/common.psm1	Improves timeout error message clarity

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