misc: update helm chart configs and readme (#1751)

* fix wiki helm

* update readme

* include service account as a stub

* use lightweight healthz for readiness and health endpoint

* remove if block for setting DB_TYPE, only postgres is supported in this chart for now

dev/helm/templates/ingress.yaml

@@ -1,39 +1,41 @@
-{{- if .Values.ingress.enabled }}
-{{- range .Values.ingress.hosts  }}
+{{- if .Values.ingress.enabled -}}
+{{- $fullName := include "wiki.fullname" . -}}
+{{- $svcPort := .Values.service.port -}}
+{{- if semverCompare ">=1.14-0" .Capabilities.KubeVersion.GitVersion -}}
+apiVersion: networking.k8s.io/v1beta1
+{{- else -}}
 apiVersion: extensions/v1beta1
+{{- end }}
 kind: Ingress
 metadata:
-  name: {{ template "wiki.fullname" $ }}
+  name: {{ $fullName }}
   labels:
-    app: {{ template "wiki.name" $ }}
-    chart: {{ template "wiki.chart" $ }}
-    release: {{ $.Release.Name | quote }}
-    heritage: {{ $.Release.Service | quote }}
+    {{- include "wiki.labels" . | nindent 4 }}
+  {{- with .Values.ingress.annotations }}
   annotations:
-    {{- if .tls }}
-    ingress.kubernetes.io/secure-backends: "true"
-    {{- end }}
-    {{- if .certManager }}
-    kubernetes.io/tls-acme: "true"
-    {{- end }}
-    {{- range $key, $value := .annotations }}
-    {{ $key }}: {{ $value | quote }}
-    {{- end }}
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
 spec:
-  rules:
-  - host: {{ .name }}
-    http:
-      paths:
-        - path: {{ default "/" .path }}
-          backend:
-            serviceName: {{ template "wiki.fullname" $ }}
-            servicePort: 80
-{{- if .tls }}
+{{- if .Values.ingress.tls }}
   tls:
-  - hosts:
-    - {{ .name }}
-    secretName: {{ .tlsSecret }}
-{{- end }}
----
+  {{- range .Values.ingress.tls }}
+    - hosts:
+      {{- range .hosts }}
+        - {{ . | quote }}
+      {{- end }}
+      secretName: {{ .secretName }}
+  {{- end }}
 {{- end }}
+  rules:
+  {{- range .Values.ingress.hosts }}
+    - host: {{ .host | quote }}
+      http:
+        paths:
+        {{- range .paths }}
+          - path: {{ . }}
+            backend:
+              serviceName: {{ $fullName }}
+              servicePort: {{ $svcPort }}
+        {{- end }}
+  {{- end }}
 {{- end }}