ClusterAddon created for existing cluster

[chess-knight]

/kind bug

What steps did you take and what happened:
I spawned CSO in the environment with an existing cluster object. This cluster is not using cluster stacks at all obviously.
I saw the ClusterAddon object created.

What did you expect to happen:
ClusterAddon is not created.

IMO it also shouldn't be created, when the cluster is not using cluster stacks.

Anything else you would like to add:
I find it during work on SovereignCloudStack/issues#544

Environment:

• cluster-stack-operator version: v0.1.0-alpha.3
• Kubernetes version: v1.27.3

[janiskemper]

@aniruddha2000 you can implement this. It is a small thing in clusteraddoncreate-controller

[janiskemper]

we can use https://github.com/kubernetes-sigs/cluster-api/blob/v1.7.2/util/predicates/cluster_predicates.go#L236