Bugfix: Resource aws_eks_access_entry only updates group OR username

[LukasdeBoer]

Description

The problematic behavior is pretty well explained in #36480 so I'm not going to repeat that here, but there is a problem with updating an aws_eks_access_entry where omitting certain fields will not keep them as-is, but replace it with the default that AWS has. So this is consistent AWS API behavior that is currently not modeled correctly in the AWS provider.

After implementing this fix, the behavior is correct and you can update only the username or kubernetes_groups without impacting the other.

Relations

Closes #36480

[github-actions]

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[github-actions]

Welcome @LukasdeBoer 👋

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 CONTRIBUTOR 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.

Also take a look at our FAQ which details how we prioritize Pull Requests for inclusion.

Thanks again, and welcome to the community! 😃

[ewbankkit]

LGTM 🚀.

% make testacc TESTARGS='-run=TestAccEKSAccessEntry_username\|TestAccEKSAccessEntry_basic' PKG=eks
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.21.8 test ./internal/service/eks/... -v -count 1 -parallel 20  -run=TestAccEKSAccessEntry_username\|TestAccEKSAccessEntry_basic -timeout 360m
=== RUN   TestAccEKSAccessEntry_basic
=== PAUSE TestAccEKSAccessEntry_basic
=== RUN   TestAccEKSAccessEntry_username
=== PAUSE TestAccEKSAccessEntry_username
=== CONT  TestAccEKSAccessEntry_basic
=== CONT  TestAccEKSAccessEntry_username
--- PASS: TestAccEKSAccessEntry_basic (630.26s)
--- PASS: TestAccEKSAccessEntry_username (686.26s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/eks	697.307s

[ewbankkit]

@LukasdeBoer Thanks for the contribution 🎉 👏.

[LukasdeBoer]

Thank you for the quick review!

[github-actions]

This functionality has been released in v5.42.0 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]

I'm going to lock this pull request because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.
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