Tag roles for master and data (#10337)

This follows role conventions seen in other Helm charts and allows graphing to break out activity stats per role

Signed-off-by: Ben Klang <bklang@powerhrg.com>

stable/elasticsearch/Chart.yaml

@@ -1,6 +1,6 @@
 name: elasticsearch
 home: https://www.elastic.co/products/elasticsearch
-version: 1.15.2
+version: 1.15.3
 appVersion: 6.5.4
 description: Flexible and powerful open source, distributed real-time search and analytics
   engine.

stable/elasticsearch/templates/data-statefulset.yaml

@@ -17,6 +17,7 @@ spec:
         app: {{ template "elasticsearch.name" . }}
         component: "{{ .Values.data.name }}"
         release: {{ .Release.Name }}
+        role: data
         {{- if .Values.data.podAnnotations }}
       annotations:
 {{ toYaml .Values.data.podAnnotations | indent 8 }}

stable/elasticsearch/templates/master-statefulset.yaml

@@ -17,6 +17,7 @@ spec:
         app: {{ template "elasticsearch.name" . }}
         component: "{{ .Values.master.name }}"
         release: {{ .Release.Name }}
+        role: master
         {{- if .Values.master.podAnnotations }}
       annotations:
 {{ toYaml .Values.master.podAnnotations | indent 8 }}