[stable/nats] Add chart and release labels in pods (#6899)

stable/nats/Chart.yaml

@@ -1,5 +1,5 @@
 name: nats
-version: 0.0.3
+version: 0.0.4
 appVersion: 1.1.0
 description: An open-source, cloud-native messaging system
 keywords:

stable/nats/templates/statefulset.yaml

@@ -18,11 +18,13 @@ spec:
   selector:
     matchLabels:
       app: "{{ template "nats.name" . }}"
+      chart: "{{ template "nats.chart" . }}"
       release: {{ .Release.Name | quote }}
   template:
     metadata:
       labels:
         app: "{{ template "nats.name" . }}"
+        chart: "{{ template "nats.chart" . }}"
         release: {{ .Release.Name | quote }}
         {{- if .Values.podLabels }}
 {{ toYaml .Values.podLabels | indent 8 }}