Following same URL approach than InMemory Broker and Kafka Broker

[salaboy]

Problem

The url format for the InMemory and Kafka BRoker follow the pattern of: http://<broker-URL>/<namespace>/<broker-name>
I think we should align with this format, even if our brokers are not multi-tenant, as discussed in our weekly sync.
By following the same pattern we will reduce friction from people moving from the InMemory Broker or the Kafka Broker to RabbitMQ

Persona:

System Integrator, System Operator or Developer creating a broker

Exit Criteria

When a broker is created the URL exposed follow the pattern: /<namespace>/<broker-name>

Time Estimate (optional):
(TBD)

Additional context (optional)

[gab-satchi]

/assign