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1. Optimize the yaml format 2. Change the "shell" to "command" for task "fetch secret" and "cleaning up" refor to https://github.com/openstack/kolla-ansible/blob/master/ansible/roles/nova/tasks/simple_cell_setup.yml#L3 Change-Id: Ia6c670ff1349888f6c8a350052e3b170693e12b1