Configuration: Extend StartMonitoringRequest with ServiceConfiguration

The Workload Configuration Module needs the ServiceConfiguration (Credentials) for Kubernetes/OpenStack. In my opinion, there should be a possibility to upload the Kubernetes config file via the Dashboard and forward them to the ReqManager and further to the Workload Collection Module. It is much easier to upload the config file instead of filling out fields with the long client-certificate and client-key "strings".

For that, the StartMonitoringRequest must be extended by the ServiceConfiguration to forward the configuration from the ReqManager to the Workload Collection Module.