chore: support v7 skus in AB e2es

[lilypan26]

What this PR does / why we need it:
AB e2e adjustments needed to run v7 skus. Primarily:

• v7 only supports disktype NVMe, we need to set this in vmss model when required
• v7 only supports gen 2 VMs, we should skip all e2es with gen 1 image

Which issue(s) this PR fixes:

Fixes #

[Copilot]

Pull request overview

This PR modifies the e2e test infrastructure to add support for configurable VM size and location variables, and increases timeout values to accommodate longer-running test scenarios. The changes span the e2e configuration, pipeline template, and the e2e run script.

Changes:

• Increases cluster creation timeout from 20 to 30 minutes in e2e config
• Doubles the e2e pipeline timeout from 90 to 180 minutes
• Adds VM_SIZE and LOCATION as optional pipeline variables that can override defaults

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
e2e/config/config.go	Increases TestTimeoutCluster default from 20m to 30m
.pipelines/templates/e2e-template.yaml	Doubles timeoutInMinutes from 90 to 180
.pipelines/scripts/e2e_run.sh	Adds exports for VM_SIZE→DEFAULT_VM_SKU and LOCATION variables with echo statements for debugging

[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated 4 comments.

[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 6 comments.

[Copilot]

Pull request overview

Copilot reviewed 9 out of 9 changed files in this pull request and generated 4 comments.

[Copilot]

Pull request overview

Copilot reviewed 8 out of 8 changed files in this pull request and generated 2 comments.

[Copilot]

This mutates the global config.Config.DefaultVMSKU at runtime. Since RunScenario calls t.Parallel() by default, this introduces a cross-test data race and can cause unrelated scenarios to start using the fallback SKU. It also happens after getBaseNBC / nbcToAKSNodeConfigV1 have already read DefaultVMSKU, so the VM size used in the bootstrapping config can diverge from the VMSS size. Instead, compute an effective VM size as a scenario-local value (e.g., on Scenario/ScenarioRuntime) before building NBC/AKSNodeConfig and VMSS model, and never mutate the global config during test execution.

Suggested change

	gen2Only, err := CachedIsVMSizeGen2Only(ctx, VMSizeSKURequest{
	Location: s.Location,
	VMSize: config.Config.DefaultVMSKU,
	})
	require.NoError(s.T, err, "checking if VM size %q supports only Gen2", config.Config.DefaultVMSKU)
	if gen2Only && s.Config.VHD.UnsupportedGen2 {
	s.T.Logf("VM size %q only supports Gen2 hypervisor but image does not, falling back to vm size that supported gen 1 %q", config.Config.DefaultVMSKU, config.DefaultV5VMSKU)
	config.Config.DefaultVMSKU = config.DefaultV5VMSKU
	}
	supportsNVMe, err := CachedVMSizeSupportsNVMe(ctx, VMSizeSKURequest{
	Location: s.Location,
	VMSize: config.Config.DefaultVMSKU,
	})
	require.NoError(s.T, err, "checking if VM size %q supports only NVMe", config.Config.DefaultVMSKU)
	if supportsNVMe {
	if s.Config.VHD.UnsupportedNVMe {
	s.T.Logf("VM size %q supports NVMe disk controller but image does not support NVMe, falling back to vm size that supports SCSI %q", config.Config.DefaultVMSKU, config.DefaultV5VMSKU)
	config.Config.DefaultVMSKU = config.DefaultV5VMSKU
	vmSize := config.Config.DefaultVMSKU
	gen2Only, err := CachedIsVMSizeGen2Only(ctx, VMSizeSKURequest{
	Location: s.Location,
	VMSize: vmSize,
	})
	require.NoError(s.T, err, "checking if VM size %q supports only Gen2", vmSize)
	if gen2Only && s.Config.VHD.UnsupportedGen2 {
	s.T.Logf("VM size %q only supports Gen2 hypervisor but image does not, falling back to vm size that supported gen 1 %q", vmSize, config.DefaultV5VMSKU)
	vmSize = config.DefaultV5VMSKU
	}
	supportsNVMe, err := CachedVMSizeSupportsNVMe(ctx, VMSizeSKURequest{
	Location: s.Location,
	VMSize: vmSize,
	})
	require.NoError(s.T, err, "checking if VM size %q supports only NVMe", vmSize)
	if supportsNVMe {
	if s.Config.VHD.UnsupportedNVMe {
	s.T.Logf("VM size %q supports NVMe disk controller but image does not support NVMe, falling back to vm size that supports SCSI %q", vmSize, config.DefaultV5VMSKU)
	vmSize = config.DefaultV5VMSKU