Description of problem:
Create a PV of type FibreChannel with source wwids,
describe the PV show source as targetWWNs with empty values.


Version-Release number of selected component (if applicable):
oc v3.10.12
kubernetes v1.10.0+b81c8f8


How reproducible:
Always

Steps to Reproduce:
1.Create a PV of type FibreChannel with source wwids.
2.Check the PV via cmd "oc get pv pv_name -o yaml"
3.Check the PV via cmd "oc describe pv pv_name"

Actual results:
Describe PV show source as targetWWNs with empty values.

Expected results:
Describe PV show correct source.

Additional info:
# oc get pv -o yaml
apiVersion: v1
items:
- apiVersion: v1
  kind: PersistentVolume
  metadata:
    annotations:
      pv.kubernetes.io/bound-by-controller: "yes"
    creationTimestamp: 2018-07-04T03:52:30Z
    finalizers:
    - kubernetes.io/pv-protection
    name: pv-ez-jr
    namespace: ""
    resourceVersion: "28326"
    selfLink: /api/v1/persistentvolumes/pv-ez-jr
    uid: ace46e58-7f3d-11e8-a154-9457a56bf834
  spec:
    accessModes:
    - ReadWriteMany
    capacity:
      storage: 5Gi
    claimRef:
      apiVersion: v1
      kind: PersistentVolumeClaim
      name: mypvc
      namespace: 1po5c
      resourceVersion: "9113"
      uid: c8d219fe-7f3d-11e8-a154-9457a56bf834
    fc:
      fsType: ext4
      lun: 2
      wwids:
      - 500a0981891b8dc5
      - 500a0981991b8dc5
    persistentVolumeReclaimPolicy: Retain
  status:
    phase: Released
kind: List
metadata:
  resourceVersion: ""
  selfLink: ""

# oc describe pv
Name:            pv-ez-jr
Labels:          <none>
Annotations:     pv.kubernetes.io/bound-by-controller=yes
Finalizers:      [kubernetes.io/pv-protection]
StorageClass:    
Status:          Released
Claim:           1po5c/mypvc
Reclaim Policy:  Retain
Access Modes:    RWX
Capacity:        5Gi
Node Affinity:   <none>
Message:         
Source:
    Type:        FC (a Fibre Channel disk)
    TargetWWNs:  
    LUN:         2
    FSType:      ext4
    ReadOnly:    false
Events:          <none>

# cat pv.yaml 
apiVersion: v1
kind: PersistentVolume
metadata:
  name: pv-ez-jr
spec:
  capacity:
    storage: 5Gi
  accessModes:
  - ReadWriteMany
  fc:
    wwids:
    - 500a0981891b8dc5
    - 500a0981991b8dc5
    lun: 2
    fsType: ext4
  persistentVolumeReclaimPolicy: Retain