feat: upgrade to kubecost v2

[takirala]

What problem does this PR solve?:

Upgrade kubecost to v2.

• Depends on feat: add cosi helm chart charts#1529 for cosi helm chart
• Depends on feat: add cosi bucket kit helm chart charts#1534 for cosi bucket kit helm chart
• Depends on https://github.com/mesosphere/kommander/pull/5374 for attached clusters. Will be done in a follow up PR.

From 2.14.x, we no longer need centralized-kubecost as there is no need to run multiple instance of kubecost on management cluster. We will have just one kubecost service which is controlled via the valuesFrom field of kubecost HelmRelease. I have added comments where needed and there are some TODO's left in the code that will be follow up PRs.

Which issue(s) does this PR fix?:

NCN-104266
NCN-104267

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Checklist

• If the PR adds a version bump, ensure there is no breaking change in Licensing model (or NA).
• If a chart is changed or app configuration is significantly changed, the chart version is correctly incremented (so that apps are not automatically upgraded from a previous version of DKP).

[github-actions]

✅ Created Kommander branch to test kommander-applications changes: https://github.com/mesosphere/kommander/tree/kapps/main/tga/kubecost-v2

[coveralls]

Pull Request Test Coverage Report for Build 12661230226

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 51.703%

---

Totals
Change from base Build 12638581195:	0.0%
Covered Lines:	167
Relevant Lines:	323

---

💛 - Coveralls