[fix][broker] Avoid Bookie data is never deleted

[315157973]

Motivation

When we clean up the data now, we first delete the index (metadata in Zookeeper), and then delete the Bookie data.
If the data deletion of Bookie fails, but the index is not there because it was deleted first,
the data of Bookie can never be deleted.

Therefore, we need to delete the data first, and then delete the index.
In this way, the entire delete operation is idempotent.
Data that is not deleted in the current cycle can be retried and deleted in the next cycle

Modifications

1. Let the method of synchronous execution become asynchronous execution
2. The order of deletion changes to delete the data first and then delete the index

Verifying this change

315157973#8

Documentation

• doc
• doc-required
• doc-not-needed
• doc-complete