woodpecker image repository is missing

``` yaml
woodpecker:
  enabled: false
  replicaCount: 4
  image:
    repository: milvusdb/woodpecker
    tag: latest
    pullPolicy: IfNotPresent
```

currently **milvusdb/woodpecker** image repository does not exist!  cause helm can't work as expected while deploy milvus with distribute mode against  woodpecker