Allow ReplicatedSecrets's targets to have a prefix

[Miles-Garnsey]

What is missing?

We should allow the target secret's name for a replicated secret to have a prefix which distinguishes it from other replicatedSecrets with the same name that may target the same namespace.

This is so that multiple K8ssandraCluster's residing in the same namespace do not create multiple ReplicatedSecrets which then conflict with one another due to having the same name.

Why do we need it?

This issue will be easier to solve if we can create multiple ReplicatedSecrets at the MedusaConfig's origin which then map to multiple secrets prefixed with the cluster name in the target. In the case that multiple clusters exist in the target context-namespace this could cause conflicts and competition between the reconcile loops for the clusters unless we can distinguish the secrets via their names with a prefix.

Environment

• K8ssandra Operator version:

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Anything else we need to know?: