RFE: check if sh.keptn.event.configure-monitor.finished is available after calling keptnConfigureMonitoring

[christian-kreuzberger-dtx]

After #80 has been implemented, we should also check for sh.keptn.event.configure-monitor.finished cloudevent with result/status check, and print the message that is returned.

More insights

Right now we assume that monitoring is configured properly when the event endpoint of Keptn responds with HTTP status 200:

            if (configureMonitoringResponse.status == 200) {
                echo "Successfully configured monitoring for: ${monitoring}"
                echo "body: ${configureMonitoringBody}"
            } else {
                echo "Couldnt configure monitoring for ${monitoring}: " + configureMonitoringResponse.content
                echo "body: ${configureMonitoringBody}"
            }    

This could lead to problems, as Keptn will almost always accept the event (unless it's malformed).
HTTP Status 200 here does not indicate whether monitoring was configured properly.

This requires the respective service (e.g., prometheus-service, dynatrace-service) to respond with a sh.keptn.event.configure-monitor.finished CloudEvent).

Definition of Done

• Implementation checks for the respective CloudEvent and prints message from CloudEvent
• Pipeline fails if keptnConfigureMonitoring is called and no CloudEvent is retrieved, or status/result of CloudEvent indicate a failure/problem
• FEATURES.md updated