Description of problem:
Install etcd as system container, the service name will be etcd. But redeploy cert playbook was trying to restart etcd_container service since "is_containerized": true  detected.
https://github.com/openshift/openshift-ansible/blob/openshift-ansible-3.6.109-1/playbooks/common/openshift-etcd/restart.yml#L8


Version-Release number of selected component (if applicable):
openshift-ansible-3.6.109-1.git.0.256e658.el7.noarch

How reproducible:
Always

Steps to Reproduce:
1.Install ocp-3.6 env on AtomicHost, enable etcd system container installed.
After installation, etcd service is running well
[root@qe-gpei-etcd-sc-4-etcd-1 etcd]# systemctl status etcd
● etcd.service - Etcd Server
   Loaded: loaded (/etc/systemd/system/etcd.service; enabled; vendor preset: disabled)
   Active: active (running) since Thu 2017-06-15 02:29:44 UTC; 3h 16min ago
 Main PID: 14193 (runc)
   Memory: 4.6M
   CGroup: /system.slice/etcd.service
           └─14193 /bin/runc --systemd-cgroup run etcd


2.Try to redeploy etcd cert with redeploy-etcd-certificates.yml playbook
ansible-playbook -i host /usr/share/ansible/openshift-ansible/playbooks/byo/openshift-cluster/redeploy-etcd-certificates.yml


Actual results:
TASK [restart etcd] ************************************************************
fatal: [qe-gpei-etcd-sc-4-etcd-1.0615-re6.qe.rhcloud.com]: FAILED! => {
    "changed": false, 
    "failed": true
}

MSG:

Could not find the requested service etcd_container: cannot check nor set state


Expected results:


Additional info: