Overcloud Deployment fails with Device or resource busy: '/etc/ hosts'

Issue

Overcloud Deployment fails with Device or resource busy: '/etc/ hosts'

2017-12-12 13:14:23Z [overcloud]: CREATE_FAILED  Resource CREATE failed: Error: resources.AllNodesDeploySteps.resources.ControllerDeployment_Step1.resources[1]: Deployment to server failed: deploy_status_code: Deployment exited with non-zero status code: 2

 Stack overcloud CREATE_FAILED

overcloud.AllNodesDeploySteps.ControllerDeployment_Step1.1:
  resource_type: OS::Heat::StructuredDeployment
  physical_resource_id: f45d29ae-661b-4fa6-8bc7-991460dc58d5
  status: CREATE_FAILED
  status_reason: |
    Error: resources[1]: Deployment to server failed: deploy_status_code : Deployment exited with non-zero status code: 2
  deploy_stdout: |
    ...
            "OSError: [Errno 16] Device or resource busy: '/etc/hosts'",
            "stdout: fde4396267aec31110c472de8e49aa483c19136922ac86637815d53add905a1a"
        ],
        "failed_when_result": true
    }
        to retry, use: --limit @/var/lib/heat-config/heat-config-ansible/cfe332b2-c550-4348-b46d-917acb140897_playbook.retry

    PLAY RECAP *********************************************************************
    localhost                  : ok=9    changed=2    unreachable=0    failed=1