stable/elasticsearch-exporter: fix bug in template (#14486)

Signed-off-by: Hector Fernandez <hfernandez@mesosphere.com>

stable/elasticsearch-exporter/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 description: Elasticsearch stats exporter for Prometheus
 name: elasticsearch-exporter
-version: 1.3.0
+version: 1.3.1
 appVersion: 1.0.2
 home: https://github.com/justwatchcom/elasticsearch_exporter
 sources:

stable/elasticsearch-exporter/templates/service.yaml

@@ -7,11 +7,9 @@ metadata:
     app: {{ template "elasticsearch-exporter.name" . }}
     release: "{{ .Release.Name }}"
     heritage: "{{ .Release.Service }}"
-    {{- if .Values.service.labels }}
-    {{- range $key, $value := .Values.service.labels }}
-      {{ $key }}: {{ $value | quote }}
-    {{- end }}
-    {{- end }}
+{{- if .Values.service.labels }}
+{{ toYaml .Values.service.labels | indent 4 }}
+{{- end }}
 {{- if .Values.service.annotations }}
   annotations:
 {{ toYaml .Values.service.annotations | indent 4 }}