🐛 Fix compatibility issues encountered while setting up envtest by using the controller-runtime branch releases (unblock CI)

[camilamacedo86]

Description

This pull request addresses issues encountered after controller-runtime updated to Go version 1.22, which resulted in failing tests due to issues with installing envtest binaries. For additional context, please refer to this issue.

To resolve these challenges, the PR implements the following fixes:

• Use of Release Branch: Instead of installing the latest version, this PR changes the approach to use the specific release branch. While pinning to a tag version would be ideal for ensuring compatibility, it's currently not feasible. Therefore, utilizing the release branch is the most technically viable solution to guarantee compatibility.

• Manual Sample Update for make generate: The make generate target generates all samples documented except for the multi-version one. Given the necessity to proceed with the fixes, this PR includes manual updates to the outdated multi-version sample. The updates are necessary due to the discrepancies highlighted by the issues addressed in this PR, and are meticulously detailed in the commit history.

• Removal of Legacy Tests for go/v2: As part of a strategic move towards releasing a MAJOR version update of Kubebuilder, this PR removes legacy tests related to go/v2. The rationale is to focus on forward compatibility rather than expending efforts on outdated versions. This aligns with our broader objectives of streamlining the development process and ensuring up-to-date compliance with current standards.

The changes proposed in this PR are crucial for maintaining the integrity and functionality of the project, especially in light of the recent Go version update in controller-runtime. By addressing these issues promptly, we aim to minimize disruptions and ensure a smooth development experience for contributors and users alike.

[camilamacedo86]

@varshaprasad96 @Kavinjsir

I will be a little :cowboy: here and get this one merged for we unblock our CI
However, if you have suggestions and etc for the fix please feel free to comment and etc and we can address in a follow up.

[Kavinjsir]

lgtm!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: camilamacedo86, Kavinjsir

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[Kavinjsir]

@varshaprasad96 @Kavinjsir

I will be a little :cowboy: here and get this one merged for we unblock our CI However, if you have suggestions and etc for the fix please feel free to comment and etc and we can address in a follow up.

Looks good to me. I'm switching to the envtest setup issue now.