Add http_proxy_to_wsgi to api-paste
Add http_proxy_to_wsgi to api-paste

This sets up the HTTPProxyToWSGI middleware in front of magnum. The
purpose of thise middleware is to set up the request URL correctly in
case there is a proxy.

Closes-Bug: #1590608
Change-Id: I3f22716575af96aea884bd481c023d394a0b00a5

openstack/magnum,ArchiFleKs/magnum,ArchiFleKs/magnum,openstack/magnum