Update Linter usage in project

[thunderboltsid]

Linting targets weren't included in build processes making way for unlinted go and yaml files in the codebase. This PR add the linters in place using golangci-lint and yamllint and fixes the linting errors highlighted.

[github-actions[bot]]

:white_check_mark: None of your dependencies violate policy!

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (cca8316) 15.21% compared to head (c9ff756) 15.24%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #373 +/- ## ========================================== + Coverage 15.21% 15.24% +0.02% ========================================== Files 18 18 Lines 1209 1207 -2 ========================================== Hits 184 184 + Misses 1025 1023 -2 ```

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[thunderboltsid]

/retest

[nutanix-cn-prow-bot[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: adiantum, thunderboltsid

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/nutanix-cloud-native/cluster-api-provider-nutanix/blob/main/OWNERS)~~ [adiantum,thunderboltsid] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[thunderboltsid]

/hold

[thunderboltsid]

/test e2e-capx-controller-upgrade

[thunderboltsid]

/hold cancel