Description of problem:

Using manila-provisioner the NFS allow access is 0.0.0.0/0, causing the possibility to access to the data from outside OCP cluster.

Version-Release number of selected component (if applicable):

OCP 3.11 with latest image
registry.redhat.io/openshift3/manila-provisioner:latest

How reproducible:

Steps to Reproduce:
1. Create a PVC using Manila-provisioner with CephFS+NFS
2. Wait till PV is ready
3. Check manila access-list for the share

Actual results:
(overcloud) [stack@undercloud ~]$  manila access-list pvc-88ce671a-d2bb-11e8-83ca-fa163eaa3d72 
+--------------------------------------+-------------+-----------+--------------+--------+------------+----------------------------+------------+
| id                                   | access_type | access_to | access_level | state  | access_key | created_at                 | updated_at |
+--------------------------------------+-------------+-----------+--------------+--------+------------+----------------------------+------------+
| fb81e653-f058-4e08-ad81-d538c7d91753 | ip          | 0.0.0.0/0 | rw           | active | None       | 2018-10-18T09:52:39.000000 | None       |
+--------------------------------------+-------------+-----------+--------------+--------+------------+----------------------------+------------+


Expected results:
Only the nodes from OCP will be allowed to access. Or at least to be able to specify when the PVC is defined

Master Log:

Node Log (of failed PODs):

PV Dump:

PVC Dump:

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

Additional info: