Description of problem:
install OCP behind proxy failed at TASK [container_runtime : Create credentials for docker cli registry auth (alternative)]

install success without proxy

Version-Release number of the following components:
openshift-ansible-3.11.0-0.10.0.git.0.91bb588None.noarch.rpm

How reproducible:
Always

Steps to Reproduce:
1. install OCP 3.11 behind proxy


Actual results:
install failed.

TASK [container_runtime : Create credentials for docker cli registry auth (alternative)] ***
Wednesday 01 August 2018  18:40:46 +0800 (0:00:04.733)       0:02:03.131 ****** 
FAILED - RETRYING: Create credentials for docker cli registry auth (alternative) (3 retries left).
FAILED - RETRYING: Create credentials for docker cli registry auth (alternative) (3 retries left).
FAILED - RETRYING: Create credentials for docker cli registry auth (alternative) (3 retries left).
FAILED - RETRYING: Create credentials for docker cli registry auth (alternative) (2 retries left).
FAILED - RETRYING: Create credentials for docker cli registry auth (alternative) (2 retries left).
FAILED - RETRYING: Create credentials for docker cli registry auth (alternative) (2 retries left).
FAILED - RETRYING: Create credentials for docker cli registry auth (alternative) (1 retries left).
FAILED - RETRYING: Create credentials for docker cli registry auth (alternative) (1 retries left).
FAILED - RETRYING: Create credentials for docker cli registry auth (alternative) (1 retries left).
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: urllib2.URLError: <urlopen error [Errno 110] Connection timed out>
fatal: [host-8-253-1.host.centralci.eng.rdu2.redhat.com]: FAILED! => {"attempts": 3, "changed": false, "module_stderr": "Traceback (most recent call last):\n  File \"/tmp/ansible_32ClGw/ansible_module_docker_creds.py\", line 237, in <module>\n    main()\n  File \"/tmp/ansible_32ClGw/ansible_module_docker_creds.py\", line 233, in main\n    run_module()\n  File \"/tmp/ansible_32ClGw/ansible_module_docker_creds.py\", line 219, in run_module\n    validate_registry_login(module, registry, encoded_auth)\n  File \"/tmp/ansible_32ClGw/ansible_module_docker_creds.py\", line 141, in validate_registry_login\n    urllib.request.urlopen(req)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 154, in urlopen\n    return opener.open(url, data, timeout)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 431, in open\n    response = self._open(req, data)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 449, in _open\n    '_open', req)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 409, in _call_chain\n    result = func(*args)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 1258, in https_open\n    context=self._context, check_hostname=self._check_hostname)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 1214, in do_open\n    raise URLError(err)\nurllib2.URLError: <urlopen error [Errno 110] Connection timed out>\n", "module_stdout": "", "msg": "MODULE FAILURE", "rc": 1}
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: urllib2.URLError: <urlopen error [Errno 110] Connection timed out>
fatal: [host-8-252-179.host.centralci.eng.rdu2.redhat.com]: FAILED! => {"attempts": 3, "changed": false, "module_stderr": "Traceback (most recent call last):\n  File \"/tmp/ansible_1Alykn/ansible_module_docker_creds.py\", line 237, in <module>\n    main()\n  File \"/tmp/ansible_1Alykn/ansible_module_docker_creds.py\", line 233, in main\n    run_module()\n  File \"/tmp/ansible_1Alykn/ansible_module_docker_creds.py\", line 219, in run_module\n    validate_registry_login(module, registry, encoded_auth)\n  File \"/tmp/ansible_1Alykn/ansible_module_docker_creds.py\", line 141, in validate_registry_login\n    urllib.request.urlopen(req)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 154, in urlopen\n    return opener.open(url, data, timeout)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 431, in open\n    response = self._open(req, data)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 449, in _open\n    '_open', req)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 409, in _call_chain\n    result = func(*args)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 1258, in https_open\n    context=self._context, check_hostname=self._check_hostname)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 1214, in do_open\n    raise URLError(err)\nurllib2.URLError: <urlopen error [Errno 110] Connection timed out>\n", "module_stdout": "", "msg": "MODULE FAILURE", "rc": 1}
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: urllib2.URLError: <urlopen error [Errno 110] Connection timed out>
fatal: [hostxxx.host.centralci.eng.rdu2.redhat.com]: FAILED! => {"attempts": 3, "changed": false, "module_stderr": "Traceback (most recent call last):\n  File \"/tmp/ansible_M_6Tgo/ansible_module_docker_creds.py\", line 237, in <module>\n    main()\n  File \"/tmp/ansible_M_6Tgo/ansible_module_docker_creds.py\", line 233, in main\n    run_module()\n  File \"/tmp/ansible_M_6Tgo/ansible_module_docker_creds.py\", line 219, in run_module\n    validate_registry_login(module, registry, encoded_auth)\n  File \"/tmp/ansible_M_6Tgo/ansible_module_docker_creds.py\", line 141, in validate_registry_login\n    urllib.request.urlopen(req)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 154, in urlopen\n    return opener.open(url, data, timeout)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 431, in open\n    response = self._open(req, data)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 449, in _open\n    '_open', req)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 409, in _call_chain\n    result = func(*args)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 1258, in https_open\n    context=self._context, check_hostname=self._check_hostname)\n  File \"/usr/lib64/python2.7/urllib2.py\", line 1214, in do_open\n    raise URLError(err)\nurllib2.URLError: <urlopen error [Errno 110] Connection timed out>\n", "module_stdout": "", "msg": "MODULE FAILURE", "rc": 1}

Expected results:
install success