- 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

Fix confusing naming
Make CR namespaced
Remove execution after deletion

There is currently a small problem, since we can stop the a running benchmark (therefore we have to kill the corresponding thread)