making hpa utlization with factor

[freeznet]

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Motivation

When function resources's request != limits, there will be a factor, but for builtin hpa rules, it will not adopt the factor, which will making the hpa cal the percentage under requests but not limits. This PR changes the builtin hpa rules to address the factor.

Modifications

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Verifying this change

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This change is a trivial rework / code cleanup without any test coverage.

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This change is already covered by existing tests, such as (please describe tests).

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This change added tests and can be verified as follows:

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• Added integration tests for end-to-end deployment with large payloads (10MB)
• Extended integration test for recovery after broker failure

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[github-actions]

@freeznet:Thanks for your contribution. For this PR, do we need to update docs?
(The PR template contains info about doc, which helps others know more about the changes. Can you provide doc-related info in this and future PR descriptions? Thanks)