Chore: Use F5 artifactory GOPROXY and self-hosted runners #15138

Job	Run time
Checks and variables	3m 53s
CEL Tests	2m 22s
NJS Unit Tests	17s
Unit Tests	3m 2s
Build Binary	2m 57s
Build Plus images / build	1m 33s
Build OSS images (nginx, linux/arm64, linux/amd64) / build	1m 11s
Build OSS images (ngf, linux/arm64, linux/amd64) / build	1m 7s
Helm Tests	0s
Functional tests (nginx, v1.34.0) / Run Tests	18m 13s
Conformance tests (nginx, v1.34.0, true) / Run Tests	9m 44s
Functional tests (plus, v1.34.0) / Run Tests	15m 49s
Conformance tests (nginx, v1.25.16, false) / Run Tests	10m 2s
Functional tests (nginx, v1.25.16) / Run Tests	17m 46s
Conformance tests (plus, v1.34.0, true) / Run Tests	10m 24s
Conformance tests (nginx, v1.25.16, true) / Run Tests	10m 49s
Conformance tests (plus, v1.25.16, true) / Run Tests	11m 1s
Conformance tests (plus, v1.34.0, false) / Run Tests	10m 10s
Conformance tests (nginx, v1.34.0, false) / Run Tests	9m 10s
Conformance tests (plus, v1.25.16, false) / Run Tests	10m 28s
Package and Publish Helm Chart	0s
Functional tests (plus, v1.25.16) / Run Tests	15m 22s
	2h 45m 20s

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