CNF-23046: Migrate away from deprecated ioutil

[sebrandon1]

ioutil has been deprecated since Go 1.16: https://go.dev/doc/go1.16#ioutil

Tracking issue: redhat-best-practices-for-k8s/telco-bot#52

Summary by CodeRabbit

• Chores
  • Modernized internal code by updating file I/O operations to use current standard library APIs, removing usage of deprecated functions and improving codebase maintainability.

[coderabbitai]

Walkthrough

Replaced deprecated ioutil.ReadFile/ioutil.WriteFile calls with os.ReadFile/os.WriteFile and removed unused ioutil imports. No functional changes to control flow, error handling, or exported declarations.

Changes

Cohort / File(s)	Summary
I/O API modernization pkg/cmd/render/render.go, pkg/operator/kube_cloud_config/bootstrap.go	Replaced ioutil.ReadFile/ioutil.WriteFile with os.ReadFile/os.WriteFile and removed unused ioutil imports. No semantic or control-flow changes.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Stable And Deterministic Test Names	✅ Passed	PR modifies only non-test source files replacing deprecated ioutil calls with os equivalents; no test files or test names are modified.
Test Structure And Quality	✅ Passed	This PR refactors production files to replace deprecated ioutil functions with os package equivalents. No test files are modified, making test quality checks not applicable.
Title check	✅ Passed	The title 'CNF-23046: Migrate away from deprecated ioutil' directly and specifically summarizes the main change: replacing deprecated ioutil functions with their modern os package equivalents across multiple files.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: sebrandon1
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[sebrandon1]

/retest

[openshift-ci]

@sebrandon1: all tests passed!

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[openshift-ci-robot]

@sebrandon1: This pull request references CNF-23046 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the story to target the "5.0.0" version, but no target version was set.

Details

In response to this:

ioutil has been deprecated since Go 1.16: https://go.dev/doc/go1.16#ioutil

Tracking issue: redhat-best-practices-for-k8s/telco-bot#52

Summary by CodeRabbit

• Chores
• Modernized internal code by updating file I/O operations to use current standard library APIs, removing usage of deprecated functions and improving codebase maintainability.

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 openshift-eng/jira-lifecycle-plugin repository.