Set enable_proxy_headers_parsing to True by default

In order to allow applications to parse proxy headers,
the option should be set to True, in most cases openstack
services are run under proxy and it is save to set this
option to true by default, as it doesn't require a lot
of processing.

Change-Id: Iaf584643a4e1029d83537205124da3551e3b3eb0
Related-Prod: https://mirantis.jira.com/browse/PROD-21456
1 file changed