add imagePullSecrets support to telegraf-ds chart (#640)

charts/telegraf-ds/Chart.yaml

 apiVersion: v1
 name: telegraf-ds
-version: 1.1.27
+version: 1.1.28
 appVersion: 1.30.2
 deprecated: false
 description: Telegraf is an agent written in Go for collecting, processing, aggregating, and writing metrics.

charts/telegraf-ds/templates/daemonset.yaml

@@ -25,6 +25,10 @@ spec:
 {{ toYaml .Values.podAnnotations | indent 8 }}
         {{- end }}
     spec:
+      {{- if .Values.imagePullSecrets }}
+      imagePullSecrets:
+{{ toYaml .Values.imagePullSecrets | nindent 8 }}
+      {{- end }}
       serviceAccountName: {{ template "telegraf.serviceAccountName" . }}
 {{- if .Values.priorityClassName }}
       priorityClassName: {{ .Values.priorityClassName | quote }}

charts/telegraf-ds/values.yaml

@@ -6,6 +6,7 @@ image:
   repo: "telegraf"
   tag: "1.30-alpine"
   pullPolicy: IfNotPresent
+imagePullSecrets: []
 ## Configure resource requests and limits
 ## ref: http://kubernetes.io/docs/user-guide/compute-resources/
 resources: