Description of problem:
run playbook:rhel_subscribe.yml, got error:  "msg": "missing required arguments: image, backend", it only fails on atomic, but pass successfully on rhel.
it seems have some root cause with bug:https://bugzilla.redhat.com/show_bug.cgi?id=1646887


ansible-2.6.6-1.el7ae.noarch
openshift-ansible-3.7.76-1.git.0.1c49d6d.el7.noarch

How reproducible:
Always

Steps to Reproduce:

# ansible-playbook rhel_subscribe.yml -i /tmp/37inventory1 -v
.......
....
TASK [os_update_latest : Update all packages] ****************************************************************************************************************
[DEPRECATION WARNING]: Using tests as filters is deprecated. Instead of using `result|success` use `result is success`. This feature will be removed in 
version 2.9. Deprecation warnings can be disabled by setting deprecation_warnings=False in ansible.cfg.
FAILED - RETRYING: Update all packages (3 retries left).
[DEPRECATION WARNING]: Using tests as filters is deprecated. Instead of using `result|success` use `result is success`. This feature will be removed in 
version 2.9. Deprecation warnings can be disabled by setting deprecation_warnings=False in ansible.cfg.
FAILED - RETRYING: Update all packages (3 retries left).
FAILED - RETRYING: Update all packages (2 retries left).
FAILED - RETRYING: Update all packages (2 retries left).
FAILED - RETRYING: Update all packages (1 retries left).
FAILED - RETRYING: Update all packages (1 retries left).
fatal: [host-8-241-106.host.centralci.eng.rdu2.redhat.com]: FAILED! => {"attempts": 3, "changed": false, "msg": "missing required arguments: image, backend"}
fatal: [host-8-246-224.host.centralci.eng.rdu2.redhat.com]: FAILED! => {"attempts": 3, "changed": false, "msg": "missing required arguments: image, backend"}
    to retry, use: --limit @/usr/share/ansible/openshift-ansible/playbooks/byo/rhel_subscribe.retry

PLAY RECAP ***************************************************************************************************************************************************
host-8-241-106.host.centralci.eng.rdu2.redhat.com : ok=8    changed=1    unreachable=0    failed=1   
host-8-246-224.host.centralci.eng.rdu2.redhat.com : ok=8    changed=2    unreachable=0    failed=1   
localhost                  : ok=1    changed=0    unreachable=0    failed=0   


Actual results:
As title
Expected results:
Run playbook successfully