Unable to import cluster to ACM due to klusterlet-work-agent pod failure

Issue

When trying to import a cluster into ACM the request gets stuck in the Pending Import state and the klusterlet-work-agent pods are continuously restarting.

In the klusterlet-work-agent pod logs we see the error:

controllers failed with error: stat /spoke/hub-kubeconfig/kubeconfig: no such file or directory

Additionally, in the logs for the klusterlet-registration pod we see the following error where the kube-apiserver of the Hub Cluster cannot be reached:

 reflector.go:178] k8s.io/client-go@v0.18.3/tools/cache/reflector.go:125: Failed to list *v1beta1.CertificateSigningRequest: Get https://api.ocp.example.com:6443/apis/certificates.k8s.io/v1beta1/certificatesigningrequests?limit=500&resourceVersion=0: dial tcp: lookup api.ocp.example.com on 10.0.0.1: no such host