Add Ubuntu 20.04 E2E Test for ARM64

[nimanch]

Waiting for E2E Test Run : https://dev.azure.com/msazure/One/_build/results?buildId=49431372&view=logs&j=8520a43c-dcec-5ce4-f544-4575e5778c8d&t=2b9ef0bf-6d8c-5f29-043a-94bc7a30cb60

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• I have read the contribution guidelines.
• Title of the pull request is clear and informative.
• Description of the pull request includes a concise summary of the enhancement or bug fix.

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• Pull request includes test coverage for the included changes.
• Description of the pull request includes
  • concise summary of tests added/modified
  • local testing done.

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