defaultRetentionTimeInMinutes from conf/standalone.conf doesn't do nothing

[freeart]

Describe the bug
defaultRetentionTimeInMinutes from standalone.conf doesn't affect to the real behavior
But bin/pulsar-admin namespaces set-retention public/default --size -1 --time -1
works fine

To Reproduce
Steps to reproduce the behaviour:

1. mount volume in docker-compose.yaml file 'docker/pulsar/conf/standalone.conf:/pulsar/conf/standalone.conf' and set retention policy

   defaultRetentionTimeInMinutes=-1
   defaultRetentionSizeInMB=-1

2. execute docker-compose.yaml with standalone option command: bash -c "bin/pulsar standalone"
3. check variables bin/pulsar-admin namespaces get-retention public/default

{
  "retentionTimeInMinutes" : -1,
  "retentionSizeInMB" : -1
}

4. send message "test" to public/default/my-topic

5. create reader from public/default/my-topic

6. message is there

7. wait about 3 minutes and read again

8. the topic is empty

9. stop docker-compose.yaml and clean volumes

10. execute docker-compose.yaml again

11. set retention policy through pulsar-admin bin/pulsar-admin namespaces set-retention public/default --size -1 --time -1

12. check variables bin/pulsar-admin namespaces get-retention public/default

{
  "retentionTimeInMinutes" : -1,
  "retentionSizeInMB" : -1
}

13. send message "test" to public/default/my-topic
14. create reader from public/default/my-topic
15. message is there
16. wait about 3 minutes and read again
17. message is still there

Expected behavior
The message should be in topic after 2 minutes when defaultRetentionTimeInMinutes=-1 configured in standalone.conf

Desktop (please complete the following information):

• OS: Official docker 2.4.0

Additional context
docker-compose.yaml

version: '3'
services:
    zookeeper:
        container_name: zookeeper
        image: confluentinc/cp-zookeeper:latest
        environment:
            ZOOKEEPER_CLIENT_PORT: 2181
            ZOOKEEPER_TICK_TIME: 2000
        volumes:
            - './docker/zookeeper/data:/var/lib/zookeeper/data'
            - './docker/zookeeper/log:/var/lib/zookeeper/log'
    pulsar:
        container_name: pulsar
        hostname: pulsar
        ports:
            - '6650:6650'
            - '9000:8080'
        volumes:
            - './docker/pulsar/data:/pulsar/data'
            - './docker/pulsar/conf/standalone.conf:/pulsar/conf/standalone.conf'
        depends_on:
            - zookeeper
        image: 'apachepulsar/pulsar:2.4.0'
        command: bash -c "bin/pulsar standalone"
    pulsar-dashboard:
        container_name: pulsar-dashboard
        image: apachepulsar/pulsar-dashboard
        ports:
            - '9001:80'
        environment:
            SERVICE_URL: http://pulsar:9000
        depends_on:
            - pulsar

[fxbing]

Default retention policy is not uploaded to zookeeper, but it is getted from zookeeper when it is used.
So, if zookeeper doesn't have retention policy, we should load it from default config file.

I have fix it in #4810