Description of problem:
vSphere volume does not provision on 3.8. The PVC stuck at pending state.
`oc describe pvc` does not show any events with the provisioning status.
# oc describe pvc pvc
Name:          pvc
Namespace:     jhou
StorageClass:  vspheredefault
Status:        Pending
Volume:        
Labels:        <none>
Annotations:   <none>
Capacity:      
Access Modes:  
Events:        <none>


Version-Release number of selected component (if applicable):
openshift v3.8.18
kubernetes v1.8.1+0d5291c
etcd 3.2.8

How reproducible:
Always

Steps to Reproduce:
1. Configure vSphere cloud provider on the VMs.
2. Create a default StorageClass
3. Create a PVC

Actual results:
3. PV does not get created

Expected results:
3. A PV is automatically provisioned

Master Log:

PVC Dump:
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: pvc
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi

StorageClass Dump (if StorageClass used by PV/PVC):
kind: StorageClass
apiVersion: storage.k8s.io/v1beta1
metadata:
  name: vspheredefault
  annotations:
    storageclass.kubernetes.io/is-default-class: "true"
provisioner: kubernetes.io/vsphere-volume

Additional info: