Support RabbitMQ Vhosts

[acelinkio]

Feature description

RabbitMQ supports having multiple tenants on the same cluster through the use of virtual hosts. Docs: https://www.rabbitmq.com/docs/vhosts. Most client libraries offer support for vhosts, it is just a matter of exposing the configuration to allow something other than the default / vhost.

Looking through the source code, Kyoo right now does not expose the configuration for changing this parameter. This requires changing each microservice that connects to rabbitmq.