feat(ServiceAttachment): add data source for google_compute_service_a…

[sanadhis]

Add data source for google_compute_service_attachment
Should close hashicorp/terraform-provider-google#17122

Release Note Template for Downstream PRs (will be copied)

See Write release notes for guidance.

`google_compute_service_attachment`

Acceptance Tests

GA provider:

make testacc TEST=./google/services/compute TESTARGS='-run=TestAccDataSourceGoogleComputeServiceAttachment_basic'
sh -c "'/Users/adhi/go/src/github.com/hashicorp/terraform-provider-google/scripts/gofmtcheck.sh'"
==> Checking that code complies with gofmt requirements...
go vet
TF_ACC_REFRESH_AFTER_APPLY=1 TF_ACC=1 TF_SCHEMA_PANIC_ON_ERROR=1 go test ./google/services/compute -v -run=TestAccDataSourceGoogleComputeServiceAttachment_basic -timeout 240m -ldflags="-X=github.com/hashicorp/terraform-provider-google/version.ProviderVersion=acc"
=== RUN   TestAccDataSourceGoogleComputeServiceAttachment_basic
=== PAUSE TestAccDataSourceGoogleComputeServiceAttachment_basic
=== CONT  TestAccDataSourceGoogleComputeServiceAttachment_basic
--- PASS: TestAccDataSourceGoogleComputeServiceAttachment_basic (139.31s)
PASS
ok      github.com/hashicorp/terraform-provider-google/google/services/compute  141.036s

Beta provider:

make testacc TEST=./google-beta/services/compute TESTARGS='-run=TestAccDataSourceGoogleComputeServiceAttachment_basic'
sh -c "'/Users/adhi/go/src/github.com/hashicorp/terraform-provider-google-beta/scripts/gofmtcheck.sh'"
==> Checking that code complies with gofmt requirements...
go vet
TF_ACC_REFRESH_AFTER_APPLY=1 TF_ACC=1 TF_SCHEMA_PANIC_ON_ERROR=1 go test ./google-beta/services/compute -v -run=TestAccDataSourceGoogleComputeServiceAttachment_basic -timeout 240m -ldflags="-X=github.com/hashicorp/terraform-provider-google-beta/version.ProviderVersion=acc"
=== RUN   TestAccDataSourceGoogleComputeServiceAttachment_basic
=== PAUSE TestAccDataSourceGoogleComputeServiceAttachment_basic
=== CONT  TestAccDataSourceGoogleComputeServiceAttachment_basic
--- PASS: TestAccDataSourceGoogleComputeServiceAttachment_basic (133.20s)
PASS
ok      github.com/hashicorp/terraform-provider-google-beta/google-beta/services/compute        135.064s

[github-actions]

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

@zli82016, 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 0b075d0:

Diff report

Your PR generated the following diffs in downstream repositories:

Repository	Diff Link	Changes
google provider	View Diff	3 files changed, 251 insertions(+)
google-beta provider	View Diff	3 files changed, 251 insertions(+)

Test report

Analytics

Total Tests	Passed	Skipped	Affected
1448	1353	93	2

Affected Service Packages

• compute

Learn how VCR tests work

---

Step 1: Replaying Mode

Action taken

Found 2 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit.

Click here to see the affected tests

• TestAccComputeInstanceFromTemplate_DiskForceAttach
• TestAccDataSourceGoogleComputeServiceAttachment_basic

View the replaying VCR build log

---

Step 2: Recording Mode

Recording Mode	Replaying Rerun	Test Name
✅ Log	✅	TestAccDataSourceGoogleComputeServiceAttachment_basic
❌ Error · Log	-	TestAccComputeInstanceFromTemplate_DiskForceAttach

Caution

Issues requiring attention before PR completion

🔴 Initial Recording Failed: Some tests failed during the recording step. See the table above for details.

Please address these issues to complete your PR. If you believe these detections are incorrect or unrelated to your change, please raise the concern with your reviewer.

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

@sanadhis, @zli82016 VCR tests complete for 0b075d0!

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes for commit 99e9d67:

Diff report

Your PR generated the following diffs in downstream repositories:

Repository	Diff Link	Changes
google provider	View Diff	3 files changed, 250 insertions(+)
google-beta provider	View Diff	3 files changed, 250 insertions(+)

Test report

Analytics

Total Tests	Passed	Skipped	Affected
1458	1365	93	0

Affected Service Packages

• compute

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

@sanadhis, @zli82016 VCR tests complete for 99e9d67!

[zli82016]

LGTM. Thanks.