fix: Fix e2e test failure

[chewong]

Reason for Change:

Issue Fixed:

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Notes:

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@d470049). Click here to learn what that means.
The diff coverage is n/a.

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[jackfrancis]

/lgtm

[chewong]

Running 1.16 e2e tests (since it covers SGX) to verify this PR - https://upstream.jenkins.azure-containers.io/view/aks-engine%20PRs/job/k8s-create-cluster-matrix/67/

[jackfrancis]

/lgtm

[acs-bot]

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