OpenShift install fails with Unlabel any existing GlusterFS nodes

Issue

• Trying to install OpenShift with Gluster with openshift_storage_glusterfs_wipe enabled

Failure summary:

  1. Hosts:    master1
     Play:     Configure GlusterFS
     Task:     Unlabel any existing GlusterFS nodes
     Message:  The task includes an option with an undefined variable. The error was: 'dict object' has no attribute 'openshift'

               The error appears to have been in '/usr/share/ansible/openshift-ansible/roles/openshift_storage_glusterfs/tasks/glusterfs_deploy.yml': line 19, column 3, but may
               be elsewhere in the file depending on the exact syntax problem.

               The offending line appears to be:


               - name: Unlabel any existing GlusterFS nodes
                 ^ here