Update region tag coverage

[averikitsch]

b/256214932

[snippet-bot]

Here is the summary of changes.

You are about to add 2 region tags.

• functions/helloworld/helloworldHttp/test/sample.integration.http.test.js:22, tag functions_http_integration_test
• functions/helloworld/helloworldHttp/test/sample.integration.http.test.js:48, tag functions_http_integration_test

---

This comment is generated by snippet-bot.
If you find problems with this result, please file an issue at:
https://github.com/googleapis/repo-automation-bots/issues.
To update this comment, add snippet-bot:force-run label or use the checkbox below:

• Refresh this comment