feat: added prometheus scrap annotations to service

Author: robbert229

charts/jaeger-postgresql/templates/service.yaml

@@ -4,6 +4,11 @@ metadata:
   name: {{ include "jaeger-postgresql.fullname" . }}
   labels:
     {{- include "jaeger-postgresql.labels" . | nindent 4 }}
+  annotations:
+    prometheus.io/scrape: "true"
+    prometheus.io/scheme: "http"
+    prometheus.io/path: "/metrics"
+    prometheus.io/port: "12346"
 spec:
   type: ClusterIP
   ports: