Introduction: point out multi-tenancy hardness

correction: MutatingAdmissionPolicy isn't there yet

only feature gate slip though 1.30, actual impl isn't mainlined as of
yet

Evaluation: qualitative analysis of cskloud

Evaluation: platform comparison table TODO explain

Evaluation: qualitative analysis of sparkles

TODO a small conclusion here, or leave it to total conclusion?

Evaluation: sparkles comparison table TODO explain

unify computational resource terminology

moar refs

Backgrounds: rbac: add ref

Conclusion: future: refs :p

Evaluation: environment and config

Conclusion: future: virtual cluster

Backgrounds: add term "operator pattern"

used in keywords, and will be used in future works for limitation on not
being able to extend kubernetes api

Conclusion: future: organization

Conclusion: future: <DB, etc>aaS

Conclusion: future: CRI hardening

Conclusion: future: add NetworkPolicy

Architecture: wordings: use tenancy

we do already introduced it via multi-tenancy, and it is more precise

Conclusion: outline future works

test push