Description of problem:
Installation failed on RHEL Atomic Host
Install success on RHEL

Version-Release number of the following components:
openshift-ansible-3.11.90

How reproducible:
Always

Steps to Reproduce:
1. install OCP 3.11 on RHEL Atomic Host

Actual results:
Installation failed.

TASK [openshift_node : Template multipath configuration] ***********************
Friday 01 March 2019  19:59:37 +0800 (0:00:00.208)       0:04:28.068 ********** 
skipping: [qe-wmeng01ah5ug311-master-etcd-1.0301-2pr.qe.rhcloud.com] => {"changed": false, "skip_reason": "Conditional result was False"}
skipping: [qe-wmeng01ah5ug311-nrr-1.0301-2pr.qe.rhcloud.com] => {"changed": false, "skip_reason": "Conditional result was False"}
skipping: [qe-wmeng01ah5ug311-node-1.0301-2pr.qe.rhcloud.com] => {"changed": false, "skip_reason": "Conditional result was False"}

TASK [openshift_node : Check devices section present] **************************
Friday 01 March 2019  19:59:37 +0800 (0:00:00.173)       0:04:28.241 ********** 
changed: [qe-wmeng01ah5ug311-nrr-1.0301-2pr.qe.rhcloud.com] => {"changed": true, "cmd": ["grep", "-e", "^devices {", "/etc/multipath.conf"], "delta": "0:00:00.004634", "end": "2019-03-01 12:04:03.421165", "failed_when_result": false, "msg": "non-zero return code", "rc": 2, "start": "2019-03-01 12:04:03.416531", "stderr": "grep: /etc/multipath.conf: No such file or directory", "stderr_lines": ["grep: /etc/multipath.conf: No such file or directory"], "stdout": "", "stdout_lines": []}
changed: [qe-wmeng01ah5ug311-node-1.0301-2pr.qe.rhcloud.com] => {"changed": true, "cmd": ["grep", "-e", "^devices {", "/etc/multipath.conf"], "delta": "0:00:00.004903", "end": "2019-03-01 12:04:03.536559", "failed_when_result": false, "msg": "non-zero return code", "rc": 2, "start": "2019-03-01 12:04:03.531656", "stderr": "grep: /etc/multipath.conf: No such file or directory", "stderr_lines": ["grep: /etc/multipath.conf: No such file or directory"], "stdout": "", "stdout_lines": []}
changed: [qe-wmeng01ah5ug311-master-etcd-1.0301-2pr.qe.rhcloud.com] => {"changed": true, "cmd": ["grep", "-e", "^devices {", "/etc/multipath.conf"], "delta": "0:00:01.006405", "end": "2019-03-01 12:04:04.416973", "failed_when_result": false, "msg": "non-zero return code", "rc": 2, "start": "2019-03-01 12:04:03.410568", "stderr": "grep: /etc/multipath.conf: No such file or directory", "stderr_lines": ["grep: /etc/multipath.conf: No such file or directory"], "stdout": "", "stdout_lines": []}

TASK [openshift_node : Add devices section] ************************************
Friday 01 March 2019  19:59:39 +0800 (0:00:01.666)       0:04:29.908 ********** 
skipping: [qe-wmeng01ah5ug311-master-etcd-1.0301-2pr.qe.rhcloud.com] => {"changed": false, "skip_reason": "Conditional result was False"}
skipping: [qe-wmeng01ah5ug311-nrr-1.0301-2pr.qe.rhcloud.com] => {"changed": false, "skip_reason": "Conditional result was False"}
skipping: [qe-wmeng01ah5ug311-node-1.0301-2pr.qe.rhcloud.com] => {"changed": false, "skip_reason": "Conditional result was False"}

TASK [openshift_node : Add LIO-ORG in MultiPath configuration] *****************
Friday 01 March 2019  19:59:39 +0800 (0:00:00.175)       0:04:30.084 ********** 
fatal: [qe-wmeng01ah5ug311-nrr-1.0301-2pr.qe.rhcloud.com]: FAILED! => {"changed": false, "msg": "Path /etc/multipath.conf does not exist !", "rc": 257}
fatal: [qe-wmeng01ah5ug311-master-etcd-1.0301-2pr.qe.rhcloud.com]: FAILED! => {"changed": false, "msg": "Path /etc/multipath.conf does not exist !", "rc": 257}
fatal: [qe-wmeng01ah5ug311-node-1.0301-2pr.qe.rhcloud.com]: FAILED! => {"changed": false, "msg": "Path /etc/multipath.conf does not exist !", "rc": 257}

Expected results:
Installation success