Fix data source aws_vpc_peering_connections

[borancar]

The data source errors out if there are no connections to return, but
should instead return an empty array and let the user decide.

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Relates #17540
Relates #8302

Output from acceptance testing:

$ make testacc TESTARGS='-run=TestAccXXX'

...

[github-actions]

Welcome @borancar 👋

It looks like this is your first Pull Request submission to the Terraform AWS Provider! If you haven’t already done so please make sure you have checked out our CONTRIBUTING guide and FAQ to make sure your contribution is adhering to best practice and has all the necessary elements in place for a successful approval.

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[ewbankkit]

Relates:

• Feature Request: Allow data sources searching tags/filters to return empty results #8302

[zhelding]

Pull request #21306 has significantly refactored the AWS Provider codebase. As a result, most PRs opened prior to the refactor now have merge conflicts that must be resolved before proceeding.

Specifically, PR #21306 relocated the code for all AWS resources and data sources from a single aws directory to a large number of separate directories in internal/service, each corresponding to a particular AWS service. This separation of code has also allowed for us to simplify the names of underlying functions -- while still avoiding namespace collisions.

We recognize that many pull requests have been open for some time without yet being addressed by our maintainers. Therefore, we want to make it clear that resolving these conflicts in no way affects the prioritization of a particular pull request. Once a pull request has been prioritized for review, the necessary changes will be made by a maintainer -- either directly or in collaboration with the pull request author.

For a more complete description of this refactor, including examples of how old filepaths and function names correspond to their new counterparts: please refer to issue #20000.

For a quick guide on how to amend your pull request to resolve the merge conflicts resulting from this refactor and bring it in line with our new code patterns: please refer to our Service Package Refactor Pull Request Guide.

[anGie44]

Thank you for this fix @borancar, LGTM 🚀 I'll follow up with an acceptance test for this use-case

Output of acceptance tests:

--- PASS: TestAccEC2VPCPeeringConnectionsDataSource_NoMatches (10.55s)
--- PASS: TestAccEC2VPCPeeringConnectionsDataSource_basic (24.90s)

[github-actions]

This functionality has been released in v4.0.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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