fix(helm): add missing parameter in GC cronjob

Author: donch

helm/kube-image-keeper/templates/garbage-collection-cron-job.yaml

@@ -39,7 +39,7 @@ spec:
                     sleep 1
                   done
 
-                  kubectl exec deploy/{{ include "kube-image-keeper.fullname" . }}-registry -- bin/registry garbage-collect /etc/docker/registry/config.yml --delete-untagged=true
+                  kubectl exec deploy/{{ include "kube-image-keeper.fullname" . }}-registry -- bin/registry garbage-collect /etc/docker/registry/config.yml --delete-untagged={{ .Values.registry.garbageCollection.deleteUntagged }}
                   kubectl set env deploy {{ include "kube-image-keeper.fullname" . }}-registry REGISTRY_STORAGE_MAINTENANCE_READONLY-
                   {{- else }}
                   kubectl rollout restart sts {{ include "kube-image-keeper.fullname" . }}-registry