[kibana] Add extensible label support

Common labels were moved to helpers template to have only one source of truth of common/added labels shared between all Kibana resources.

Also, this extends the capability to add a custom label and this will be common between all the resources.

kibana/templates/_helpers.tpl

@@ -29,3 +29,15 @@ Return the appropriate apiVersion for ingress.
 {{- print "networking.k8s.io/v1beta1" -}}
 {{- end -}}
 {{- end -}}
+
+{{/*
+Common labels
+*/}}
+{{- define "kibana.labels" -}}
+app: {{ .Chart.Name }}
+release: {{ .Release.Name | quote }}
+heritage: {{ .Release.Service }}
+{{- if .Values.labels }}
+{{ toYaml .Values.labels }}
+{{- end }}
+{{- end -}}

kibana/templates/configmap.yaml

@@ -4,9 +4,7 @@ apiVersion: v1
 kind: ConfigMap
 metadata:
   name: {{ template "kibana.fullname" . }}-config
-  labels:
-    app: {{ .Chart.Name }}
-    release: {{ .Release.Name | quote }}
+  labels: {{ include "kibana.labels" . | nindent 4 }}
 data:
 {{- range $path, $config := .Values.kibanaConfig }}
   {{ $path }}: |

kibana/templates/deployment.yaml

@@ -2,12 +2,7 @@ apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: {{ template "kibana.fullname" . }}
-  labels:
-    app: {{ .Chart.Name }}
-    release: {{ .Release.Name | quote }}
-    {{- range $key, $value := .Values.labels }}
-    {{ $key }}: {{ $value | quote }}
-    {{- end }}
+  labels: {{ include "kibana.labels" . | nindent 4 }}
 spec:
   replicas: {{ .Values.replicas }}
   strategy:

kibana/templates/ingress.yaml

@@ -6,10 +6,7 @@ apiVersion: {{ template "kibana.ingress.apiVersion" . }}
 kind: Ingress
 metadata:
   name: {{ $fullName }}
-  labels:
-    app: {{ .Chart.Name }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
+  labels: {{ include "kibana.labels" . | nindent 4 }}
 {{- with .Values.ingress.annotations }}
   annotations:
 {{ toYaml . | indent 4 }}

kibana/templates/service.yaml

@@ -3,10 +3,7 @@ apiVersion: v1
 kind: Service
 metadata:
   name: {{ template "kibana.fullname" . }}
-  labels:
-    app: {{ .Chart.Name }}
-    release: {{ .Release.Name | quote }}
-    heritage: {{ .Release.Service }}
+  labels: {{ include "kibana.labels" . | nindent 4 }}
 {{- if .Values.service.labels }}
 {{ toYaml .Values.service.labels | indent 4}}
 {{- end }}