🐛 rbac: fix deduplication of core group and add test coverage

[chrischdi]

Fixes: #1036

Deduplication happened before renaming.

Now renaming before doing deduplication to fix this case for the core group.

[chrischdi]

/test pull-controller-tools-test-master

Dunno why it did not run

[k8s-ci-robot]

@chrischdi: The specified target(s) for /test were not found.
The following commands are available to trigger required jobs:

• /test pull-controller-tools-test-main

Use /test all to run all jobs.

In response to this:

/test pull-controller-tools-test-master

Dunno why it did not run

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.

[chrischdi]

/test pull-controller-tools-test-master

[k8s-ci-robot]

@chrischdi: The specified target(s) for /test were not found.
The following commands are available to trigger required jobs:

• /test pull-controller-tools-test-main

Use /test all to run all jobs.

In response to this:

/test pull-controller-tools-test-master

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.

[chrischdi]

weird, why is there a pull-controller-tools-test-master, I guess it was moved to main during the pr

[sbueringer]

Thank you very much!!

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 73582574176256678d0b4379c9e391f5db1cfb43

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: chrischdi, sbueringer

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

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [sbueringer]

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