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/Gemfile.lock

@@ -263,10 +263,10 @@ GEM
 
 PLATFORMS
   x86_64-linux
+  x86_64-linux-musl
 
 DEPENDENCIES
   github-pages (~> 215)
-  jekyll-feed (~> 0.12)
   minima (~> 2.5)
   tzinfo (~> 1.2)
   tzinfo-data