Update fluentd-helm.md (#2469)

_source/logzio_collections/_log-sources/fluentd-helm.md

@@ -162,6 +162,7 @@ helm install -n monitoring \
 | `daemonset.terminationGracePeriodSeconds` | Termination period (in seconds) to wait before killing Fluentd pod process on pod shutdown. | `30` |
 | `daemonset.extraVolumes` | If needed, more volumes can be added with this field. | `[]` |
 | `daemonset.init.extraVolumeMounts` | If needed, more volume mounts to the init container can be added with this field. | `[]` |
+| `daemonset.init.containerImage` | Init container image for the fluentd daemonset. | `busybox` |
 | `daemonset.priorityClassName` | Set [priorityClassName](https://kubernetes.io/docs/concepts/scheduling-eviction/pod-priority-preemption/) for all DaemonSet pods. | `""` |
 | `windowsDaemonset.kubernetesVerifySsl` | Enables to validate SSL certificates (windows). | `true` |
 | `windowsDaemonset.auditLogFormat` | Match Fluentd's format for kube-apiserver audit logs. Set to `audit-json` if your audit logs are in json format. (windows) | `audit` |