Test testbench multitenancy - do not merge #18426

Job	Run time
Run PM4-workflow / build-docker-image-EKS	9s
Run PM4-workflow / Delete Instance	18s
Run PM4-workflow / deploy-EKS	3m 41s
Run PM4-workflow / run-phpunit	27m 27s
Run PM4-workflow / Smoke Test (CI3)	4m 32s
Run PM4-workflow / Smoke Test (CI1)	4m 32s
Run PM4-workflow / Run API Tests	0s
Run PM4-workflow / Smoke Test (CI2)	4m 35s
	45m 14s

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