feat: add support for optional global labels in Metabase deployment configuration

Author: Nicolas Brière

charts/metabase/templates/deployment.yaml

@@ -14,6 +14,9 @@ spec:
       labels:
         app: {{ .Values.global.service_name }}
         {{- include "metabase.labels" . | nindent 8 }}
+        {{- if .Values.global.labels }}
+        {{- toYaml .Values.global.labels | nindent 8 }}
+        {{- end }}
     spec:
       {{- if include "metabase.serviceAccountName" . }}
       serviceAccountName: {{ include "metabase.serviceAccountName" . }}