Resolve operator crash when NATS unavailable

[BuddhiWathsala]

Purpose

Resolve #50. As minor changes resolve HTTP status code showing and remove unwanted specs in parser YAML.

Approach

The error throw of the watch function ignored instead of returning it. Do not use any error logging or notification since in the controller runtime by default shows the error. Here we resolve the operator crashing problem. But the operator will show the error of missing NATS because that error log is not in the operator scope.

Test environment

minikube 0.33.1