Description of problem:

When using ansible installer to setup cns cluster, it will fail if namespace for cns pods is different from default name space "default" 

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

ocp 3.6 and latest git pull of openshift-ansible 

How reproducible:
2 out of 2 tries 

Steps to Reproduce:
try to setup cns where 
openshift_storage_glusterfs_namespace=

has some value 


Actual results:
ansible playbook will fail 

error message : 

TASK [openshift_storage_glusterfs : Set heketi-cli command] **********************************************************************************************************************************
ok: [ip-172-31-59-4.us-west-2.compute.internal]

TASK [openshift_storage_glusterfs : Verify heketi service] ***********************************************************************************************************************************
fatal: [ip-172-31-59-4.us-west-2.compute.internal]: FAILED! => {
    "changed": false, 
    "cmd": [
        "oc", 
        "rsh", 
        "deploy-heketi-storage-1-t4j17", 
        "heketi-cli", 
        "-s", 
        "http://localhost:8080", 
        "--user", 
        "admin", 
        "--secret", 
        "SEj42AlrU9TReWd5jAaOFvZb+ko0K958gGaNBSke3EM=", 
        "cluster", 
        "list"
    ], 
    "delta": "0:00:00.232417", 
    "end": "2017-06-23 04:17:24.120037", 
    "failed": true, 
    "rc": 1, 
    "start": "2017-06-23 04:17:23.887620"
}

STDERR:

Error from server (NotFound): pods "deploy-heketi-storage-1-t4j17" not found

	to retry, use: --limit @/root/openshift-ansible/playbooks/byo/config.retry

PLAY RECAP ***********************************************************************************************************************************************************************************
ip-172-31-17-225.us-west-2.compute.internal : ok=248  changed=41   unreachable=0    failed=0   
ip-172-31-3-127.us-west-2.compute.internal : ok=233  changed=40   unreachable=0    failed=0   
ip-172-31-3-234.us-west-2.compute.internal : ok=233  changed=40   unreachable=0    failed=0   
ip-172-31-30-118.us-west-2.compute.internal : ok=233  changed=40   unreachable=0    failed=0   
ip-172-31-37-245.us-west-2.compute.internal : ok=248  changed=41   unreachable=0    failed=0   
ip-172-31-54-57.us-west-2.compute.internal : ok=233  changed=40   unreachable=0    failed=0   
ip-172-31-59-4.us-west-2.compute.internal : ok=578  changed=143  unreachable=0    failed=1   
ip-172-31-61-211.us-west-2.compute.internal : ok=248  changed=41   unreachable=0    failed=0   
localhost                  : ok=12   changed=0    unreachable=0    failed=0   


Failure summary:

  1. Host:     ip-172-31-59-4.us-west-2.compute.internal
     Play:     Configure GlusterFS
     Task:     openshift_storage_glusterfs : Verify heketi service
     Message:  ???




Expected results:
ansible to finish 


Additional info:
issue not visible if openshift_storage_glusterfs_namespace= is not populated