Description of problem:
  openshift-ansible playbook failed to deploy cluster due to templating error


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

How reproducible:
always

Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:


Description of problem:

Version-Release number of the following components:
rpm -q openshift-ansible
rpm -q ansible
ansible --version

How reproducible:

Steps to Reproduce:
1.
2.
3.

Actual results:

TASK [openshift_persistent_volumes : include_tasks] ****************************
Friday 16 February 2018  19:09:03 +0000 (0:00:00.324)       0:05:18.395 ******* 
included: /home/slave3/workspace/Launch Environment Flexy/private-openshift-ansible/roles/openshift_persistent_volumes/tasks/pvc.yml for host-8-246-82.host.centralci.eng.rdu2.redhat.com

TASK [openshift_persistent_volumes : Deploy PersistentVolumeClaim definitions] ***
Friday 16 February 2018  19:09:03 +0000 (0:00:00.035)       0:05:18.431 ******* 
fatal: [host-8-246-82.host.centralci.eng.rdu2.redhat.com]: FAILED! => {"changed": false, "msg": "AnsibleError: template error while templating string: no test named 'None'. String: ---\napiVersion: \"v1\"\nkind: \"List\"\nitems:\n{% for claim in persistent_volume_claims %}\n- apiVersion: \"v1\"\n  kind: \"PersistentVolumeClaim\"\n  metadata:\n    name: \"{{ claim.name }}\"\n  spec:\n    accessModes: {{ claim.access_modes | lib_utils_to_padded_yaml(2, 2) }}\n    resources:\n      requests:\n        storage: \"{{ claim.capacity }}\"\n{% if claim.storageclass is not None %}\n    storageClassName: \"{{ claim.storageclass }}\"\n{% endif %}\n{% endfor %}\n"}
	to retry, use: --limit @/home/slave3/workspace/Launch Environment Flexy/private-openshift-ansible/playbooks/deploy_cluster.retry

PLAY RECAP *********************************************************************
host-8-246-82.host.centralci.eng.rdu2.redhat.com : ok=479  changed=180  unreachable=0    failed=1   
localhost                  : ok=13   changed=0    unreachable=0    failed=0   


INSTALLER STATUS ***************************************************************
Initialization             : Complete (0:00:14)
Health Check               : Complete (0:00:19)
etcd Install               : Complete (0:00:37)
NFS Install                : Complete (0:00:13)
Master Install             : Complete (0:02:00)
Master Additional Install  : Complete (0:00:21)
Node Install               : Complete (0:01:31)
Hosted Install             : In Progress (0:00:02)
	This phase can be restarted by running: playbooks/openshift-hosted/config.yml
 


Play:     Create Hosted Resources - persistent volumes
     Task:     Deploy PersistentVolumeClaim definitions
     Message:  AnsibleError: template error while templating string: no test named 'None'. String: ---
               apiVersion: "v1"
               kind: "List"
               items:
               {% for claim in persistent_volume_claims %}
               - apiVersion: "v1"
                 kind: "PersistentVolumeClaim"
                 metadata:
                   name: "{{ claim.name }}"
                 spec:
                   accessModes: {{ claim.access_modes | lib_utils_to_padded_yaml(2, 2) }}
                   resources:
                     requests:
                       storage: "{{ claim.capacity }}"
               {% if claim.storageclass is not None %}
                   storageClassName: "{{ claim.storageclass }}"
               {% endif %}
               {% endfor %}

Expected results:

Additional info:
Please attach logs from ansible-playbook with the -vvv flag