Adjust Benchmark Definitions for Operator

Depends on !131 (merged), !139 (merged), !153 (merged)

This is just an early draft, for a final version, we need to address the following items:

• Replace installation via install-configmaps.sh script by according additions to the Helm chart
• Reduce the amount of configMaps --> abandoned (see #240 (closed))
• Allow for additional benchmark definitions

helm/templates/theodolite/random-scheduler/cluster-role-binding.yaml

-{{- if .Values.randomScheduler.rbac.create -}}
+{{- if and .Values.randomScheduler.enabled .Values.randomScheduler.rbac.create -}}
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRoleBinding
 metadata: