Updated tests file naming scheme

[kunal-511]

Pull Request Template for Kubeflow Manifests

✏️ Summary of Changes

Moved all the files from /tests/gh-actions -----> /tests ( as suggested)
Updated the naming scheme according to this format componentName_{install.sh, test.sh, test.py, test.yaml}

🐛 Related Issues

#3054

✅ Contributor Checklist

• I have tested these changes with kustomize. See Installation Prerequisites.
• All commits are signed-off to satisfy the DCO check.
• I have considered adding my company to the adopters page to support Kubeflow and help the community, since I expect help from the community for my issue (see 1. and 2.).

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