Description of problem:
In OSP 7, haproxy does not redirect from http to https for SSL enabled configurations. I created this RFE in case that this is not yet fixed in more recent versions.

Version-Release number of selected component (if applicable):
OSP 7  (RFE is for more recent versions, >= 10)

Steps to reproduce:
I just deployed a 1 controller + 1 compute lab with SSL and RHEL OSP 7.3. This is the relevant section of haproxy.cfg about horizon:
~~~
[root@overcloud-controller-0 ~]# cat /etc/haproxy/haproxy.cfg | grep horizon -A10
listen horizon
  bind 10.0.0.4:443 transparent ssl crt /etc/pki/tls/private/overcloud_endpoint.pem
  bind 172.16.2.4:80 transparent
  mode http
  cookie SERVERID insert indirect nocache
  rsprep ^Location:\ http://(.*) Location:\ https://\1
  server overcloud-controller-0 172.16.2.7:80 check fall 5 inter 2000 rise 2
~~~

How to make this work manually"
~~~
+  bind 10.0.0.4:80 transparent
+  redirect scheme https code 301 if !{ ssl_fc }
~~~

So the final result:
~~~
listen horizon
  bind 10.0.0.4:443 transparent ssl crt /etc/pki/tls/private/overcloud_endpoint.pem
  bind 172.16.2.4:80 transparent
  bind 10.0.0.4:80 transparent
  redirect scheme https code 301 if !{ ssl_fc }
  mode http
  cookie SERVERID insert indirect nocache
  rsprep ^Location:\ http://(.*) Location:\ https://\1
  server overcloud-controller-0 172.16.2.7:80 check fall 5 inter 2000 rise 2
~~~
and restart haproxy.

We need to modify tripleo so that it adds this redirect (if the customer wishes to add it)