For code review

Result message now also uses the entity.MessageStruct. This will have to
be changed in the frontend before merging.

Wrong things being passed, should work now woo!

test-client-id

Renamed from query-service-deployment to simply query-service. Added
resource limits and requests to both deployment and integration pod.
Added horizontal pod autoscaler to scale up query service based on cpu
usage.

Updated integration test

Will not work first try.

Updated database credentials to kubernetes Arangodb credentials.