K8s metadata

[rsevilla87]

Type of change

• [ ] Refactor
• [x] New feature
• [ ] Bug fix
• [x] Optimization
• [ ] Documentation Update

Description

Some updates required to make this library compatible with vanilla k8s

• When infrastructure or the clusterversion resources are not found, assume that this is not an OCP cluster and return empty fields rather than crashing
• Omitting empty metadata fields
• Count control-plane nodes as masters

Related Tickets & Documents

• Related Issue #
• Closes #

Checklist before requesting a review

• [x] I have performed a self-review of my code.
• [ ] If it is a core feature, I have added thorough tests.

Testing

• Please describe the System Under Test.
• Please provide detailed steps to perform tests related to this code change.
• How were the fix/results from this change verified? Please provide relevant screenshots or results.

[codecov[bot]]

Codecov Report

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

Comparison is base (dc2da49) 83.33% compared to head (7840ef7) 83.33%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #38 +/- ## ======================================= Coverage 83.33% 83.33% ======================================= Files 6 6 Lines 312 312 ======================================= Hits 260 260 Misses 38 38 Partials 14 14 ```

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