Add support for https partners

* Handle special:zrma from http->https links
* remove variance on X-Forwarded-For and X-Forwarded-Proto
since currently varnish handles the X-CS filtering for all proxies
and HTTPS traffic.

Change-Id: Ie0b2cefa61f76701ef843b292405c97cff3ff0f0
Merge "Add support for https partners"