Make the analysis of experiments more flexible

• Allow arbitrary prometheus range queres (update prometheusResponse)
• Allow usage of more than one slo checker
• Update the json which send to the python slo checker
• refactoring
• Update CRDs in order to set the query string as an dedicated parameter for a slo checker
• Update exisiting python slo checker in order to use the new JSON format (handled in !185 (merged))

Closes #249 (closed)

helm/jmx-custom-map.yaml

+apiVersion: v1
+data:
+  jmx-kafka-prometheus.yml: |
+    jmxUrl: service:jmx:rmi:///jndi/rmi://localhost:5555/jmxrmi
+    lowercaseOutputName: true
+    lowercaseOutputLabelNames: true
+    ssl: false
+kind: ConfigMap
+metadata:
+  name: theodolite-cp-kafka-jmx-configmap
+  namespace: default