gerrit: charts and app configuration

Change-Id: If4f05f749719d6ba0e2ced8da563699bc6fbc4c0
diff --git a/charts/gerrit-replica/templates/git-backend.secrets.yaml b/charts/gerrit-replica/templates/git-backend.secrets.yaml
new file mode 100644
index 0000000..94b1705
--- /dev/null
+++ b/charts/gerrit-replica/templates/git-backend.secrets.yaml
@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name:  {{ .Release.Name }}-git-backend-secret
+  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 }}
+data:
+  .htpasswd: {{ required "A .htpasswd-file is required for the git backend." .Values.gitBackend.credentials.htpasswd | b64enc }}
+type: Opaque