Improve documentation on how to redirect non-ssl vhosts to ssl vhosts.

Hi.

This is the suggested way of redirecting. http://wiki.apache.org/httpd/RedirectSSL

Apache also recommend against using the rewrite method.  http://wiki.apache.org/httpd/RewriteHTTPToHTTPS

Finally, the original rewrite method won't work when using hiera due to http://projects.puppetlabs.com/issues/16235

Kind Regards,
Alex