Update the Deployment Descriptors for KAFKA_TOPIC

[VincenzoFerme]

Update the deployment descriptors, referencing to the following issue declared as fixed: https://github.com/benchflow/drivers-maker/issues/47

[simonedavico]

What is there to update exactly?

[VincenzoFerme]

Remove the KAFKA_TOPIC env variable from the deployment descriptors, if it is generated.