SetupFabricCommand: Add --skip-anon-consumers option

[orlandothoeny]

Adds an --skip-anon-consumers option to the SetupFabricCommand (rabbitmq:setup-fabric).
Which will skip the setupFabric() method call on AnonConsumers if the option is set. The behaviour is the same as now if the option is not set.

Our use case:

We have producer and consumer containers.
These run the rabbitmq:setup-fabric command on startup.
We have set the auto_setup_fabric config to false on our producers & consumers.

This way, we can ensure that all needed exchanges & queues exist after the container has started. And the exchanges & queues are not redeclared every time we publish a message or restart a consumer.

Problem we run into:

We also have anonymous consumers. For those, we observe that the anonymous / auto-delete queues that are created by the rabbitmq:setup-fabric command are never deleted.
This may be the case, because we use the same RabbitMQ bundle configuration for our producer & consumer containers (we'd like to keep it that way if possible, makes it easier). Thus, the anon consumers are also configured on the producer containers. And those create a new auto-delete queue when they run the rabbitmq:setup-fabric command. I'm not 100% sure, but I suspect these queues are never deleted, because there's never a consumer for them.

The easiest fix I see is, to just add the ability to ignore the anon consumers when running the command.