Description of problem:
Scaleup of etcd failed when scaling up etcd from 1 to 3 nodes.

Version-Release number of the following components:
openshift-ansible - d0c4e258276e316d26d7322c4064df5b915f8fd6

rpm -q ansible
ansible-2.4.4.0-1.el7ae.noarch

ansible --version
ansible 2.4.4.0
  config file = /etc/ansible/ansible.cfg
  configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python2.7/site-packages/ansible
  executable location = /usr/bin/ansible
  python version = 2.7.5 (default, May  4 2018, 09:38:16) [GCC 4.8.5 20150623 (Red Hat 4.8.5-34)]

Steps to Reproduce:
1. create 1 node etcd cluster
2. try to add 2 more nodes to etcd my running playbook openshift-ansible/playbooks/openshift-etcd/scaleup.yml

Actual results:
Please include the entire output from the last TASK line through the end of output if an error is generated

Expected results:
playbook fails

Additional info:
Please attach logs from ansible-playbook with the -vvv flag