test: run supported tests with emulators

[hallvictoria]

Description

Converts blob, table, queue, generic, and event hub tests to run using emulators.
Updates CODEOWNERS file, adds retries for flaky unit tests.

• Adds a new workflow for running these tests: ci-emulator-tests.yml
  • This workflow will run as part of the public build and official build
  • It can be run as part of the public build because it doesn't have any secrets
  • It can also be run with sdk and extensions releases
• Refactors these tests into a new emulator_tests folder
  • This means that those tests will no longer interact with prod resources and skips them for the E2E tests
• Starts the emulators through tests/emulator_tests/utils/docker-compose.yml
  • This docker-compose file starts both the Azurite storage emulator and the EventHub emulator in a single place
• Generic tests can be run with emulators because they use table storage
• Deferred binding blob tests require a connection string to run properly and cannot be run using emulators
• EventHub emulator support:
  • Event Hub resources defined in Config.json
  • Emulator started in docker-compose.yml
• Note: two separate ci-emulator-tests.yml files
  • A linux pool is required to spin up the Docker container
  • For official-build, the top level pool must be windows. To run a job using a linux pool as part of the official-build, it must be defined in the job template (example: docker consumption & dedicated tests)
  • There is a different pool for public and internal, and pools can't be mixed between orgs (public pool can't be used in an internal pipeline and vice versa)
  • Conditionally setting or using a variable to set the pool is not allowed in the internal org (Validate Hosted Pool Information stage fails)
  • Therefore, the only way to run tests that require a linux pool in both the official and public builds is to create two separate templates

Fixes #

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• New Unit tests were added for the changes made and CI is passing.

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