added hautoproxy auto-configuring haproxy

This image configures haproxy to forward connections for all available
kubernetes services.  It is meant to be run alongside other contains in
a kubernetes pod to provide access to "remote" services at a consistent
address so that keystone api endpoints can be configured in a sane
fashion.

Change-Id: Ic923c6a772f1bdf36b97b05a1d04de9e5b841ddd
Merge "added hautoproxy auto-configuring haproxy"