failed expects first param is a dict

Issue

• Ansible script seems to be blocked

TASK: [openshift_manage_node | Label nodes] *********************************** 
<hostname.example.com> ESTABLISH CONNECTION FOR USER: root
fatal: [hostname.example.com] => Failed to template {{ openshift.common.client_binary }} label --overwrite node {{ item.openshift.common.hostname }} {{ item.openshift.node.labels | oo_combine_dict  }}: |failed expects first param is a dict

FATAL: all hosts have already failed -- aborting

PLAY RECAP ******************************************************************** 
           to retry, use: --limit @/root/config.retry