fix: Always use forward slash in originAnnotations

[cblims]

This change fixes originAnnotations where Kustomize on Windows generate paths with backslashes (), which conflicts when the same configuration is applied on Linux/macOS (using /).

• Replaced filepath.Join with path.Join to ensure that paths always use slash as a separator, regardless of the operating system.
• Renamed the local variable path to inputPath to avoid conflicts with the path package, improving readability and maintainability.

[linux-foundation-easycla]

• ✅login: cblims / (f0ea905)

The committers listed above are authorized under a signed CLA.

[k8s-ci-robot]

Hi @cblims. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[k8s-ci-robot]

Welcome @cblims!

It looks like this is your first PR to kubernetes-sigs/kustomize 🎉. Please refer to our pull request process documentation to help your PR have a smooth ride to approval.

You will be prompted by a bot to use commands during the review process. Do not be afraid to follow the prompts! It is okay to experiment. Here is the bot commands documentation.

You can also check if kubernetes-sigs/kustomize has its own contribution guidelines.

You may want to refer to our testing guide if you run into trouble with your tests not passing.

If you are having difficulty getting your pull request seen, please follow the recommended escalation practices. Also, for tips and tricks in the contribution process you may want to read the Kubernetes contributor cheat sheet. We want to make sure your contribution gets all the attention it needs!

Thank you, and welcome to Kubernetes. 😃

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: cblims
Once this PR has been reviewed and has the lgtm label, please assign koba1t for approval. For more information see the Kubernetes Code Review Process.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[varshaprasad96]

While this change makes sense in unifying the filepath for Unix systems, I'm just curious on whether it would break Windows users wherein input path would be with \, but the output would be / which could be incompatible. (I have not much experience in using Kustomize with windows).

@koba1t @stormqueen1990 @antoooks any thoughts?

@cblims could you please also add a test case in origin_test.go that verifies this scenario?