Comment 4 for bug 1405190

@Igor,

setting 'Host' header breaks port redirecting, keystone thinks that it get requests from 80/tcp port and returns incorrect links:

http://paste.openstack.org/show/154696/

That cause another issue: https://bugs.launchpad.net/fuel/+bug/1405686

If you need to keep original host address in proxied to keystone requests, let's put it directly in URL:

proxy_pass http://$host:5000/$1;