Add RequestTemplate YAML and Terraform sample templates for Chronicle

[epopcop]

Release Note Template for Downstream PRs (will be copied)

See Write release notes for guidance.

`google_chronicle_request_template`

[github-actions]

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

@rileykarson, 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.

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes for commit 3fbb445:

Diff report

Your PR generated the following diffs in downstream repositories:

Repository	Diff Link	Changes
google provider	View Diff	1 file changed, 194 insertions(+)
google-beta provider	View Diff	4 files changed, 1289 insertions(+)
terraform-google-conversion	View Diff	1 file changed, 223 insertions(+)

Test report

Analytics

Total Tests	Passed	Skipped	Affected
59	57	1	1

Affected Service Packages

• chronicle

Learn how VCR tests work

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Step 1: Replaying Mode

Action taken

Found 1 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit.

Click here to see the affected tests

• TestAccChronicleRequestTemplate_chronicleRequesttemplateUpdateExample

View the replaying VCR build log

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Step 2: Recording Mode

Recording Mode	Replaying Rerun	Test Name
✅ Log	✅	TestAccChronicleRequestTemplate_chronicleRequesttemplateUpdateExample

🟢 All tests passed!

View the recording VCR build log or the debug logs folder for detailed results.

@epopcop, @rileykarson, @ankitgoyal0301 VCR tests complete for 3fbb445!