Adding SSL support for RadosGW (WIP)

- UI part is missing
- hacks to work behind HAProxy (like for nova_dashboard) are missing

Good catch! Hrm. I guess we should do it step by step. My first concern is that with the rgw.conf we have for SSL, I don't think things are working the way you expect them to work. But I could be wrong. What's happening on port 5590 right now?