feat: add the ability to configure dnsPolicy on deployment (#733)

Author: JoshuaFurman

charts/telegraf/templates/deployment.yaml

@@ -28,6 +28,23 @@ spec:
 {{ toYaml .Values.podAnnotations | indent 8 }}
         {{- end }}
     spec:
+{{- if .Values.dnsPolicy }}
+      dnsPolicy:
+{{ toYaml .Values.dnsPolicy | indent 8}}
+{{- end }}
+{{- if and .Values.dnsConfig .Values.dnsConfig.nameservers }}
+      dnsConfig:
+        nameservers:
+{{ toYaml .Values.dnsConfig.nameservers | indent 10}}
+{{- end }}
+{{- if and .Values.dnsConfig .Values.dnsConfig.searches }}
+        searches:
+{{ toYaml .Values.dnsConfig.searches | indent 10}}
+{{- end }}
+{{- if and .Values.dnsConfig .Values.dnsConfig.options }}
+        options:
+{{ toYaml .Values.dnsConfig.options | indent 10}}
+{{- end }}
 {{- if .Values.securityContext }}
       securityContext:
 {{ toYaml .Values.securityContext | indent 8 }}
@@ -126,4 +143,4 @@ spec:
           name: {{ include "telegraf.fullname" . }}
       {{- if .Values.volumes }}
 {{ toYaml .Values.volumes | indent 6 }}
-      {{- end }}
+{{- end }}