a-o-i: Write proxy variables

Write the proper variables for http(s) and proxy excludes to the ansible inventory.

utils/src/ooinstall/openshift_ansible.py

@@ -135,6 +135,16 @@ def write_inventory_vars(base_inventory, multiple_masters, proxy):
         #base_inventory.write('openshift_image_tag=v{}\n'.format(CFG.settings.get('variant_version')))
         base_inventory.write('openshift_image_tag=v{}\n'.format('3.1.1.6'))
 
+    if CFG.settings.get('openshift_http_proxy', ''):
+        base_inventory.write("openshift_http_proxy={}\n".format(
+                                                            CFG.settings['openshift_http_proxy']))
+    if CFG.settings.get('openshift_https_proxy', ''):
+        base_inventory.write("openshift_https_proxy={}\n".format(
+                                                            CFG.settings['openshift_https_proxy']))
+    if CFG.settings.get('openshift_no_proxy', ''):
+        base_inventory.write("openshift_no_proxy={}\n".format(
+                                                            CFG.settings['openshift_no_proxy']))
+
 
 def write_host(host, inventory, schedulable=None):
     global CFG