Description of problem:
Installation failed when building env behind proxy on openstack

Version-Release number of the following components:
openshift-ansible-3.6.153-1.git.0.5a6bf7d.el7.noarch.rpm

How reproducible:
Always

Steps to Reproduce:
1.Set the following options in ansible inventory to build env using proxy
openshift_http_proxy=http://proxy.x.com:x
openshift_https_proxy=http://proxy.x.com:x
openshift_no_proxy="169.254.169.254"

2.Start installer

Actual results:
TASK [openshift_facts : Gather Cluster facts and set is_containerized if needed] ***
Tuesday 18 July 2017  08:55:48 +0000 (0:00:00.086)       0:00:28.929 ********** 
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: KeyError: 'no_proxy_internal_hostnames'
fatal: [openshift-x.com]: FAILED! => {
    "changed": false, 
    "failed": true, 
    "module_stderr": "Traceback (most recent call last):\n  File \"/tmp/ansible_7JbNKe/ansible_module_openshift_facts.py\", line 2601, in <module>\n    main()\n  File \"/tmp/ansible_7JbNKe/ansible_module_openshift_facts.py\", line 2588, in main\n    protected_facts_to_overwrite)\n  File \"/tmp/ansible_7JbNKe/ansible_module_openshift_facts.py\", line 1992, in __init__\n    protected_facts_to_overwrite)\n  File \"/tmp/ansible_7JbNKe/ansible_module_openshift_facts.py\", line 2058, in generate_facts\n    facts = set_proxy_facts(facts)\n  File \"/tmp/ansible_7JbNKe/ansible_module_openshift_facts.py\", line 1673, in set_proxy_facts\n    auto_hosts = common['no_proxy_internal_hostnames'].split(',')\nKeyError: 'no_proxy_internal_hostnames'\n", 
    "module_stdout": ""
}

MSG:

MODULE FAILURE

        to retry, use: --limit @/home/slave5/workspace/Launch-Environment-Flexy/private-openshift-ansible/playbooks/byo/config.retry


Expected results:


Additional info: