TPT-3807: Added DiskEncryption field for LKE Node Pool creation

[ezilber-akamai]

📝 Description

Added support for DiskEncryption field in LKE Node Pool POST operation.

✔️ How to Test

make test-int TEST_ARGS="-run TestLKENodePool"

[Copilot]

Pull request overview

Adds DiskEncryption support to LKE node pool creation flows and updates integration coverage/fixtures to validate the new field.

Changes:

• Added DiskEncryption to LKENodePoolCreateOptions and propagated it through GetCreateOptions.
• Updated LKE node pool integration tests to create pools with disk encryption enabled and assert the returned value.
• Refreshed integration fixtures to include disk_encryption in request/response payloads.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
lke_node_pools.go	Extends node pool create options to include disk_encryption and propagates it from node pool objects.
test/integration/lke_node_pools_test.go	Enables disk encryption in node pool create options and asserts it on GET.
test/integration/fixtures/TestLKENodePool_GetMissing.yaml	Updates recorded headers for the missing-node-pool test.
test/integration/fixtures/TestLKENodePool_GetFound_k8s.yaml	Updates recorded Kubernetes /nodes response used by readiness polling.
test/integration/fixtures/TestLKENodePool_CreateWithLabelsAndTaints.yaml	Updates recorded LKE cluster/node pool create flows and responses.
test/integration/fixtures/TestLKENodePoolNode_Recycle.yaml	Updates recorded node pool/node recycle flow fixtures to include disk encryption.
test/integration/fixtures/TestLKENodePoolNode_Get.yaml	Updates recorded node pool/node get flow fixtures to include disk encryption.

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