Unable to remove klusterlet CRD from ocp cluster with cleanup script. This makes it so I am unable to import existing clusters to my RHACM environment. When trying to run the auto generated command to install the klusterlet agent it thinks it already exists on the cluster. I also tried removing the klusterlet CRD manually and had the same result when trying to import an existing cluster. 

OCP 4.12.17 RHACM 2.8.1

Consistent

1. Log onto cluster that has RHACM installed and multi-cluster hub CRD created
2. download and run cleanup shell script targeting the cluster you want to import that had a klusterlet on it
3. Go to RHACM console and select the infrastructure tab
4. click import cluster
5. give it a name (ignore the ansible portion) 
6. click generate command and copy the command
7. log onto target managed cluster you want to import and run the command

The cluster cannot be imported because its Klusterlet CRD already exists.
Either the cluster was already imported, or it was not detached completely during a previous detach process.
Detach the existing cluster before trying the import again.

Cluster becomes connected and is available to RHACM config

cleanup.sh
#!/bin/bash
###############################################################################
# Copyright (c) 2020 Red Hat, Inc.
###############################################################################if [ -z "${OPERATOR_NAMESPACE}" ]; then
        OPERATOR_NAMESPACE="open-cluster-management-agent-addon"
fiif [ -z "${KLUSTERLET_NAMESPACE}" ]; then
        KLUSTERLET_NAMESPACE="open-cluster-management-agent"
fiKUBECTL=oc# Force delete klusterlet
echo "attempt to delete klusterlet"
${KUBECTL} delete klusterlet klusterlet --timeout=60s
${KUBECTL} delete namespace ${KLUSTERLET_NAMESPACE} --wait=false
echo "force removing klusterlet"
${KUBECTL} patch klusterlet klusterlet --type="json" -p '[{"op": "remove", "path":"/metadata/finalizers"}]'
echo "removing klusterlet crd"
${KUBECTL} delete crd klusterlets.operator.open-cluster-management.io --timeout=30s# Force delete all component CRDs if they still exist
component_crds=(
        applicationmanagers.agent.open-cluster-management.io
        certpolicycontrollers.agent.open-cluster-management.io
        iampolicycontrollers.agent.open-cluster-management.io
        policycontrollers.agent.open-cluster-management.io
        searchcollectors.agent.open-cluster-management.io
        workmanagers.agent.open-cluster-management.io
        appliedmanifestworks.work.open-cluster-management.io
        klusterlets.operator.open-cluster-management.io
)for crd in "${component_crds[@]}"; do
        echo "force delete all CustomResourceDefinition ${crd} resources..."
        for resource in `${KUBECTL} get ${crd} -o name -n ${OPERATOR_NAMESPACE}`; do
                echo "attempt to delete ${crd} resource ${resource}..."
                ${KUBECTL} delete ${resource} -n ${OPERATOR_NAMESPACE} --timeout=30s
                echo "force remove ${crd} resource ${resource}..."
                ${KUBECTL} patch ${resource} -n ${OPERATOR_NAMESPACE} --type="json" -p '[{"op": "remove", "path":"/metadata/finalizers"}]'
        done
        echo "force delete all CustomResourceDefinition ${crd} resources..."
        ${KUBECTL} delete crd ${crd}
done${KUBECTL} delete namespace ${OPERATOR_NAMESPACE}