Add Kubernetes env vars to prometheus startup
Prometheus requires two ENV vars from Kubernetes for service discovery.
KUBERNETES_SERVICE_HOSTKUBERNETES_SERVICE_PORT
It is harmless if these vars are missing when running outside of Kubernetes.
Prometheus requires two ENV vars from Kubernetes for service discovery.
KUBERNETES_SERVICE_HOSTKUBERNETES_SERVICE_PORTIt is harmless if these vars are missing when running outside of Kubernetes.