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

docs/release-process.md

@@ -35,7 +35,7 @@ again be merged into master.
 
 7. Tag this commit `v0.3.1` (can be done via GitLab). The corresponding Docker images will be uploaded.
 
-8. Create *releases* on GitLab and GitHub. Upload the generated Helm package to these releases.
+8. Create *releases* on GitLab and GitHub. Upload the generated Helm package to these releases via the UIs of GitLab and GitHub.
 
 9. Switch to the `master` branch.