Description of problem:
Enable NFS storage options in ansible inventory for docker-registry, installer would fail at TASK [openshift_hosted : Set facts for persistent volume]

...

TASK [openshift_hosted : include] **********************************************
Sunday 26 February 2017  09:31:51 +0000 (0:00:00.261)       0:35:05.052 ******* 
skipping: [ec2-54-91-247-75.compute-1.amazonaws.com] => {
    "changed": false, 
    "skip_reason": "Conditional check failed", 
    "skipped": true
}

TASK [openshift_hosted : Set facts for persistent volume] **********************
Sunday 26 February 2017  09:31:51 +0000 (0:00:00.170)       0:35:05.223 ******* 
fatal: [ec2-54-91-247-75.compute-1.amazonaws.com]: FAILED! => {
    "failed": true
}

MSG:

the field 'args' has an invalid value, which appears to include a variable that is undefined. The error was: 'pvc_volume_mounts' is undefined

The error appears to have been in 'openshift-ansible/roles/openshift_hosted/tasks/registry/registry.yml': line 67, column 3, but may
be elsewhere in the file depending on the exact syntax problem.

The offending line appears to be:


- name: Set facts for persistent volume
  ^ here



Version-Release number of selected component (if applicable):
openshift-ansible-3.5.15-1.git.0.8d2a456.el7.noarch.rpm

How reproducible:
Always

Steps to Reproduce:
1.Set the following NFS options and individual NFS host in ansible inventory file, start installation playbook
openshift_hosted_registry_storage_kind=nfs
openshift_hosted_registry_storage_nfs_options="*(rw,root_squash,sync,no_wdelay)"
openshift_hosted_registry_storage_nfs_directory=/var/lib/exports
openshift_hosted_registry_storage_volume_name=regpv
openshift_hosted_registry_storage_access_modes=["ReadWriteMany"]
openshift_hosted_registry_storage_volume_size=17G


Actual results:


Expected results:


Additional info: