Cleanup all Pulsar related metadata in delete-cluster-metadata command

**Is your feature request related to a problem? Please describe.**
Currently seems the `delete-cluster-metadata` command is only cleaning the /admin/clusters and /managed-ledgers path in MetaStore, which might left some metadata in MetaStore like tenant and namespace data. And if user reuse same MetaStore for a new Pulsar cluster could observe tenant/namespace from previous installation.

**Describe the solution you'd like**
Provide an option in the `delete-cluster-metadata` command to completely remove all metadata in MetaStore.

**Describe alternatives you've considered**
N/A

**Additional context**
Add any other context or screenshots about the feature request here.