Add google_compute_region_backend_service Datasource

[Dawid212]

This PR adds a data_source_google_compute_region_backend_service

Related Issues

• Resolves: Enhancement: Add google_compute_region_backend_service data source.  hashicorp/terraform-provider-google#17102

Release Note

See Write release notes for guidance.

`google_compute_region_backend_service`	

[github-actions]

Hello! I am a robot. Tests will require approval from a repository maintainer to run. Googlers: see go/terraform-auto-test-runs to set up automatic test runs.

@shuyama1, 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.

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[shuyama1]

I triggered the tests and I'm working on the review now. Could you add a documentation for this datasource following https://googlecloudplatform.github.io/magic-modules/develop/add-handwritten-datasource/#add-documentation? Thanks

[modular-magician]

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

Diff report

Your PR generated some diffs in downstreams - here they are.

google provider: Diff ( 3 files changed, 181 insertions(+))
google-beta provider: Diff ( 3 files changed, 181 insertions(+))

[modular-magician]

Tests analytics

Total tests: 1137
Passed tests: 1056
Skipped tests: 79
Affected tests: 2

Click here to see the affected service packages

• compute

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

• TestAccDataSourceComputeRegionBackendService_basic
• TestAccDataSourceComputeRegionBackendService_withProject

Get to know how VCR tests work

[modular-magician]

🔴 Tests failed during RECORDING mode:
TestAccDataSourceComputeRegionBackendService_basic [Error message] [Debug log]
TestAccDataSourceComputeRegionBackendService_withProject [Error message] [Debug log]

🔴 Errors occurred during RECORDING mode. Please fix them to complete your PR.

View the build log or the debug log for each test