Multitenancy - Refactor and fix for config caching #18079

Job	Run time
Run PM4-workflow / build-docker-image-EKS	8m 26s
Run PM4-workflow / Delete Instance	20s
Run PM4-workflow / run-phpunit	1s
Run PM4-workflow / deploy-EKS	1s
Run PM4-workflow / Run API Tests	1s
	8m 49s

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