RESOURCE-472 Removing the lint errors in the rubocop v-1.31

[soumyo13]

Signed-off-by: Soumyodeep Karmakar soumyo.k13@gmail.com

Description

Previously the rubocop version was 1.25. Now in the buildkite, the rubocop version changed to 1.31. The problem was that some of the library files were failing in the newer version of the rubocop.

So we have updated the rubocop version in the local and then checked. Also, we have modified the changes in the libraries directory.

Now the lint error is fixed with the newer version of the rubocop.

Issues Resolved

List any existing issues this PR resolves or any Discourse or StackOverflow discussion that's relevant

Check List

Please fill a box or appropriate ([x]) or mark N/A.

• [ ] New functionality includes integration tests/controls
• [ ] New Terraform resources
• [ ] Documentation provided or updated for resources
• [ ] All Integration Tests pass
• [x] All Unit Tests pass
• [x] rake lint passes
• [x] All commits have been signed-off for the Developer Certificate of Origin. See https://github.com/chef/chef/blob/master/CONTRIBUTING.md#developer-certification-of-origin-dco

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