Thin StorageClass PVCs remain in Pending state indefinitely

Issue

• Persistent volume claims provisioned from the thin StorageClass using the OpenShift vSphere cloud provider remain in Pending indefinitely.
• The claim remains in a Pending state without any indication from oc describe pvc as to why this is occurring.
• A VMDK is created on the specified datastore, but the PVC never binds and the VMDK stays 0KB.
• The following logs are repeated in the active master kube-controller-manager pod:

  I0101 00:20:52.420678       1 pv_controller.go:334] synchronizing unbound PersistentVolumeClaim[openshift-kube-controller-manager/testpvc1]: no volume found
  I0101 00:20:52.420720       1 pv_controller.go:1342] provisionClaim[openshift-kube-controller-manager/testpvc1]: started
  I0101 00:20:52.420752       1 pv_controller.go:1614] scheduleOperation[provision-openshift-kube-controller-manager/testpvc1[2edae8cf-4794-11ea-b1ab-0050569ea5ea]]
  I0101 00:20:52.420781       1 pv_controller.go:1625] operation "provision-openshift-kube-controller-manager/testpvc1[2edae8cf-4794-11ea-b1ab-0050569ea5ea]" is already running, skipping
(...)
  I0101 00:21:37.421228       1 pv_controller_base.go:170] enqueued "openshift-kube-controller-manager/testpvc1" for sync
  I0101 00:21:37.421263       1 pv_controller_base.go:356] claimWorker[openshift-kube-controller-manager/testpvc1]
  I0101 00:21:37.421285       1 pv_controller_base.go:518] storeObjectUpdate updating claim "openshift-kube-controller-manager/testpvc1" with version 460169
  I0101 00:21:37.421313       1 pv_controller.go:247] synchronizing PersistentVolumeClaim[openshift-kube-controller-manager/testpvc1]: phase: Pending, bound to: "", bindCompleted: false, boundByController: