Make Kafka and Zookeeper services names configurable

Currently those are hard-coded and prefixed with my-confluent.

changed milestone to %0.3.0

added modul/theodolite + 1 deleted label

changed milestone to %0.4.0

added Master Project 20/21 label

added To Do label and removed 1 deleted label

added In Progress label and removed To Do label

mentioned in merge request !85 (merged)

closed

removed In Progress label

changed milestone to %0.5.0

added Theodolite Kotlin label