Replaced basic scaling with explicit automatic scaling in App Engine sample to fix diff issue.

[guptadipanshu]

Release Note Template for Downstream PRs (will be copied)

Replaced basic scaling with explicit automatic scaling in App Engine sample to fix diff issue.

Per b/325645138, this rolls back #10000, which was intended to be a temporary fix.

appengine: fixed permadiff in `google_app_engine_standard_app_version` 

[google-cla]

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

View this failed invocation of the CLA check for more information.

For the most up to date status, view the checks section at the bottom of the pull request.

[github-actions]

Googlers: For automatic test runs see go/terraform-auto-test-runs.

@melinath, a repository maintainer, has been assigned to review your changes. If you have not received review feedback within 2 business days, please leave a comment on this PR asking them to take a look.

You can help make sure that review is quick by doing a self-review and by running impacted tests locally.

[melinath]

@modular-magician reassign reviewer @melinath

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes for commit a6f0bd7:

Diff report

Your PR generated the following diffs in downstream repositories:

Repository	Diff Link	Changes
google provider	View Diff	1 file changed, 1 insertion(+)
google-beta provider	View Diff	1 file changed, 1 insertion(+)

Test report

Analytics

Total Tests	Passed	Skipped	Affected
16	13	3	0

Affected Service Packages

• appengine

Learn how VCR tests work

---

Step 1: Replaying Mode

🟢 All tests passed in Replaying mode! No Recording was needed.

View the replaying VCR build log

@guptadipanshu, @melinath VCR tests complete for a6f0bd7!