Description of problem:
Efs/NFS dynamic provisioner does not support mount option for StorageClass

Version-Release number of selected component (if applicable):
[root@ip-172-18-6-178 ~]# oc version
oc v3.9.0-0.51.0
kubernetes v1.9.1+a0ce1bc657
features: Basic-Auth GSSAPI Kerberos SPNEGO

Server https://ip-172-18-6-178.ec2.internal:8443
openshift v3.9.0-0.51.0
kubernetes v1.9.1+a0ce1bc657

How reproducible:
Always
Steps to Reproduce:
1.Create a storageclass with mountoption tcp ro
[root@ip-172-18-6-178 ~]# oc get sc slow -o yaml
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  annotations:
    storageclass.beta.kubernetes.io/is-default-class: "false"
  creationTimestamp: 2018-02-26T08:06:02Z
  name: slow
  resourceVersion: "35027"
  selfLink: /apis/storage.k8s.io/v1/storageclasses/slow
  uid: e32f181b-1acb-11e8-883b-0efd92eaefde
mountOptions:
- tcp
provisioner: openshift.org/aws-efs
reclaimPolicy: Delete
2.Create a dynamic pvc
[root@ip-172-18-6-178 ~]# oc get pvc
NAME      STATUS    VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS   AGE
efspvc    Bound     pvc-e6d2005a-1acb-11e8-883b-0efd92eaefde   1Gi        RWO            slow           3m

3.Check the pv yaml file
[root@ip-172-18-6-178 ~]# oc get pv pvc-e6d2005a-1acb-11e8-883b-0efd92eaefde -o yaml
apiVersion: v1
kind: PersistentVolume
metadata:
  annotations:
    pv.beta.kubernetes.io/gid: "2000"
    pv.kubernetes.io/provisioned-by: openshift.org/aws-efs
  creationTimestamp: 2018-02-26T08:06:09Z
  name: pvc-e6d2005a-1acb-11e8-883b-0efd92eaefde
  resourceVersion: "35053"
  selfLink: /api/v1/persistentvolumes/pvc-e6d2005a-1acb-11e8-883b-0efd92eaefde
  uid: e7509909-1acb-11e8-883b-0efd92eaefde
spec:
  accessModes:
  - ReadWriteOnce
  capacity:
    storage: 1Gi
  claimRef:
    apiVersion: v1
    kind: PersistentVolumeClaim
    name: efspvc
    namespace: 6wqts
    resourceVersion: "35041"
    uid: e6d2005a-1acb-11e8-883b-0efd92eaefde
  nfs:
    path: /efspvc-pvc-e6d2005a-1acb-11e8-883b-0efd92eaefde
    server: fs-c8e05981.efs.us-east-1.amazonaws.com
  persistentVolumeReclaimPolicy: Delete
  storageClassName: slow
status:
  phase: Bound


Actual results:
PV is not annotated with mount option

Expected results:
PV is annotated with mount option
Master Log:

Node Log (of failed PODs):

PV Dump:

PVC Dump:

StorageClass Dump (if StorageClass used by PV/PVC):

Additional info: