Remove all non null values that are returned #749

Job	Run time
Submodel Service - Build and Start Docker Image	1m 53s
Concept Description Repository MongoDB - Build and Start Docker Image	2m 19s
AAS Environment MongoDB - Build and Start Docker Image	2m 28s
AAS Discovery - Build and Start Docker Image	2m 0s
AAS Environment - Build and Start Docker Image	2m 19s
AAS Repository MongoDB - Build and Start Docker Image	2m 34s
Submodel Repository - Build and Start Docker Image	1m 59s
AASX File Server - Build and Start Docker Image	1m 56s
Submodel Repository MongoDB - Build and Start Docker Image	2m 16s
AAS Registry Kafka MongoDB - Build and Start Docker Image	3m 5s
AAS Registry Log Mem - Build and Start Docker Image	2m 3s
AAS Registry Kafka Mem - Build and Start Docker Image	2m 59s
Concept Description Repository - Build and Start Docker Image	2m 1s
AAS Discovery MongoDB - Build and Start Docker Image	2m 27s
AAS Repository - Build and Start Docker Image	2m 14s
Submodel Registry Log Mem - Build and Start Docker Image	2m 4s
Submodel Registry Log MongoDB - Build and Start Docker Image	3m 19s
AAS Registry Log MongoDB - Build and Start Docker Image	2m 55s
Submodel Registry Kafka MongoDB - Build and Start Docker Image	3m 25s
Submodel Registry Kafka Mem - Build and Start Docker Image	3m 2s
	49m 18s

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