feat: Increase STS Sample Coverage

[danielbankhead]

Increase STS Sample Coverage

[generated-files-bot]

Warning: This pull request is touching the following templated files:

• .kokoro/pre-samples-test.sh - .kokoro files are templated and should be updated in synthtool
• README.md - README.md is managed by synthtool. However, a partials file can be used to update the README, e.g.: https://github.com/googleapis/nodejs-storage/blob/main/.readme-partials.yaml
• samples/README.md - samples/README.md is managed by synthtool. However, a partials file can be used to update the README, e.g.: https://github.com/googleapis/nodejs-storage/blob/main/.readme-partials.yaml

[snippet-bot]

Here is the summary of changes.

You are about to add 5 region tags.

• samples/aws-request.js:27, tag storagetransfer_transfer_from_aws
• samples/check-latest-transfer-operation.js:20, tag storagetransfer_get_latest_transfer_operation
• samples/get-transfer-job-with-retries.js:20, tag storagetransfer_create_retry_handler
• samples/nearline-request.js:26, tag storagetransfer_transfer_to_nearline
• samples/transfer-check.js:20, tag storagetransfer_transfer_check

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[ddelgrosso1]

I noticed this setup/teardown is repeated for a lot of tests. Would it be possible to do as a root hook since you are using parallel mode?

[danielbankhead]

Good point - I had them separate to avoid race conditions (since shared buckets may make conflicting transfers) and to allow the tests to be ran individually (npx mocha test/transfer-check.test.js)