Install Benchmarks with Helm

With this MR, Benchmarks and their required ConfigMaps can be installed via Helm.

Installing them is enabled by default but can also be disbaled.

This MR will fix #242 (closed), #212 (closed) .

helm/templates/theodolite/role.yaml

@@ -51,6 +51,7 @@ rules:
     - benchmarks
     - executions
     - executions/status
+    - benchmarks/status
     verbs:
     - delete
     - list