gerrit: charts and app configuration

Change-Id: If4f05f749719d6ba0e2ced8da563699bc6fbc4c0
diff --git a/charts/gerrit-replica/templates/git-backend.service.yaml b/charts/gerrit-replica/templates/git-backend.service.yaml
new file mode 100644
index 0000000..7bd47ef
--- /dev/null
+++ b/charts/gerrit-replica/templates/git-backend.service.yaml
@@ -0,0 +1,35 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ .Release.Name }}-git-backend-service
+  labels:
+    app.kubernetes.io/component: git-backend
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    chart: {{ template "gerrit-replica.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+    {{- if .Values.additionalLabels }}
+{{ toYaml .Values.additionalLabels  | indent 4 }}
+    {{- end }}
+  {{- if .Values.gitBackend.service.additionalAnnotations }}
+  annotations:
+{{ toYaml .Values.gitBackend.service.additionalAnnotations  | indent 4 }}
+  {{- end }}
+spec:
+  {{ with .Values.gitBackend.service }}
+  {{- if .loadBalancerSourceRanges -}}
+  loadBalancerSourceRanges:
+{{- range .loadBalancerSourceRanges }}
+    - {{ . | quote }}
+{{- end }}
+  {{- end }}
+  ports:
+  - name: http
+    port: {{ .http.port }}
+    targetPort: 80
+  type: {{ .type }}
+  externalTrafficPolicy: {{ .externalTrafficPolicy }}
+  {{- end }}
+  selector:
+    app.kubernetes.io/component: git-backend
+    app.kubernetes.io/instance: {{ .Release.Name }}