Fix failed AsyncioTest.test_send_failure and clean up tests (#231)

After https://github.com/apache/pulsar/pull/23291, which is included in Pulsar 4.0.0, when the tenant does not exist, the broker will respond with `BrokerMetadataError`, which is retryable.

Before that, the error code is `AuthorizationError`, which is not retryable so that `create_producer` will fail immediately.

This patch fixes the `test_send_failure` to assert the error is `Timeout`. Additional, separate some tests from `pulsar_test.py`:
1. debug logger tests will affect other tests so that all tests will print debug logs
2. running `schema_test` in `pulsar_test` might have unexpected failures like

```
Failed to create ConsumerImpl for persistent://public/default/my-python-pattern-consumer-3-partition-0: Failed to create steady_timer: kqueue: Too many open files [system:24]
Failed when subscribed to topic persistent://public/default/my-python-pattern-consumer-3 in TopicsConsumer. Error - ConnectError
Unable to create Consumer - [Muti Topics Consumer: TopicName - persistent://public/default/my-python-pattern-consumer.* - Subscription - my-pattern-consumer-sub] Error - ConnectError
Failed to retry lookup for get-partition-metadata-persistent://public/default/my-v2-topic-producer-consumer: Failed to create steady_timer: kqueue: Too many open files [system:24]
Error Checking/Getting Partition Metadata while Subscribing on persistent://public/default/my-v2-topic-producer-consumer -- ConnectError
Failed to retry lookup for get-partition-metadata-persistent://public/default/my-v2-topic-producer-consumer: Failed to create steady_timer: kqueue: Too many open files [system:24]
Error Checking/Getting Partition Metadata while Subscribing on persistent://public/default/my-v2-topic-producer-consumer -- ConnectError
Failed to retry lookup for get-partition-metadata-persistent://public/default/test_has_message_available_after_seek-1730263910.78957: Failed to create steady_timer: kqueue: Too many open files [system:24]
Error Checking/Getting Partition Metadata while creating producer on persistent://public/default/test_has_message_available_after_seek-1730263910.78957 -- ConnectError
Failed to retry lookup for get-partition-metadata-persistent://public/default/test_seek_latest_message_id-1730263910.789991: Failed to create steady_timer: kqueue: Too many open files [system:24]
```