RabbitMQ Kubernets Operator doesn't allow scale down operations

[drgogeta86]

As per

stork/pkg/appregistration/appregistration.go

Line 242 in 77b30eb

Path: "spec.replicas",

The default ApplicationRegistration for RabbitMQCluster object scale-down strategy is based on changing CRD .spec.replica to 0.

Unfortunatelly isn't the case ... The Operator doesn't support scale-down at all

You can also see the Operator source Code here and it explains why it isn't supported

https://github.com/rabbitmq/cluster-operator/blob/e8384885e409d471a389d61cb09a11b3a64eacd8/controllers/reconcile_scale_down.go#L15

Unfortunately, the strategy for RabbitMQ is a little funky.

1. Label RabbitMQCluster object with the label
   rabbitmq.com/pauseReconciliation: true
2. Scale down RabbitMQCluster now unmanaged StatefulSet ( but still retains ownerReferences