support influxdb with ingress (#5099)

stable/influxdb/Chart.yaml

 name: influxdb
-version: 0.9.0
+version: 0.9.1
 appVersion: 1.4
 description: Scalable datastore for metrics, events, and real-time analytics.
 keywords:

stable/influxdb/templates/ingress.yaml

+{{- if .Values.ingress.enabled -}}
+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  name: {{ template "influxdb.fullname" . }}
+  labels:
+    app: {{ template "influxdb.fullname" . }}
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    release: "{{ .Release.Name }}"
+    heritage: "{{ .Release.Service }}"
+  annotations:
+{{ toYaml .Values.ingress.annotations | indent 4 }}
+spec:
+{{- if .Values.ingress.tls }}
+  tls:
+    - hosts:
+      - {{ .Values.ingress.hostname | quote }}
+      secretName: {{ .Values.ingress.secretName }}
+{{- end }}
+  rules:
+  - host: {{ .Values.ingress.hostname }}
+    http:
+      paths:
+      - path: /
+        backend:
+          serviceName: {{ template "influxdb.fullname" . }}
+          servicePort: 8086
+{{- end -}}

stable/influxdb/values.yaml

@@ -86,6 +86,15 @@ resources:
     memory: 16Gi
     cpu: 8
 
+ingress:
+  enabled: false
+  tls: false
+  # secretName: my-tls-cert # only needed if tls above is true
+  hostname: influxdb.foobar.com
+  annotations:
+    # kubernetes.io/ingress.class: "nginx"
+    # kubernetes.io/tls-acme: "true"
+
 ## Node labels for pod assignment
 ## Ref: https://kubernetes.io/docs/user-guide/node-selection/
 ##