kubectl delete cluster <cluster_name> wont proceed untill we manually delete the IBMPowerVSImage

[Karthik-K-N]

/kind bug
/area provider/ibmcloud

What steps did you take and what happened:
[A clear and concise description of what the bug is.]

Create cluster which auto creates required resources, later try to delete the cluster using kubectl delete cluster <cluster_name>. The cluster deletion wont proceed as the delete call on IBMpowerVSImage is never called, We could see following error in logs

Cluster still has descendants - need to requeue

As a workaround we need to manually delete the IBMPowerVSImage.

This is introduced after adding the PR #1682

What did you expect to happen:

Successfully delete the cluster

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

Environment:

• Cluster-api version:
• Minikube/KIND version:
• Kubernetes version: (use kubectl version):
• OS (e.g. from /etc/os-release):