Update data/control plane split design #9001

Job	Run time
Checks and variables	1m 40s
NJS Unit Tests	20s
Unit Tests	44s
Build Binary	36s
Build Plus images / build	1m 9s
Build OSS images (nginx, linux/arm64, linux/amd64) / build	1m 15s
Build OSS images (ngf, linux/arm64, linux/amd64) / build	1m 23s
Helm Tests	0s
Conformance tests (nginx, v1.25.16, true) / Run Tests	7m 3s
Conformance tests (nginx, v1.25.16, false) / Run Tests	6m 20s
Conformance tests (nginx, v1.31.1, false) / Run Tests	6m 21s
Conformance tests (nginx, v1.31.1, true) / Run Tests	6m 11s
Conformance tests (plus, v1.25.16, false) / Run Tests	6m 25s
Conformance tests (plus, v1.25.16, true) / Run Tests	6m 49s
Conformance tests (plus, v1.31.1, false) / Run Tests	6m 8s
Conformance tests (plus, v1.31.1, true) / Run Tests	6m 6s
Functional tests (nginx, v1.25.16) / Run Tests	13m 4s
Functional tests (plus, v1.25.16) / Run Tests	13m 26s
Functional tests (nginx, v1.31.1) / Run Tests	13m 2s
Package and Publish Helm Chart	0s
Functional tests (plus, v1.31.1) / Run Tests	12m 51s
	1h 50m 53s

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