add helm charts

backing-services/elasticsearch/templates/poddisruptionbudget.yaml

@@ -0,0 +1,15 @@
+{{- if .Values.maxUnavailable }}
+{{- if .Capabilities.APIVersions.Has "policy/v1" -}}
+apiVersion: policy/v1
+{{- else}}
+apiVersion: policy/v1beta1
+{{- end }}
+kind: PodDisruptionBudget
+metadata:
+  name: "{{ template "elasticsearch.uname" . }}-pdb"
+spec:
+  maxUnavailable: {{ .Values.maxUnavailable }}
+  selector:
+    matchLabels:
+      app: "{{ template "elasticsearch.uname" . }}"
+{{- end }}