Your browser sent a request that this server could not understand. Reason: You're speaking plain HTTP to an SSL-enabled server port. Instead use the HTTPS scheme to access this URL, please.
This is totally possible. The following redirects all http to the https url.
<VirtualHost *:80>
-- snip --
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}
</VirtualHost>
<VirtualHost *:443>
-- snip --
SSLEngine on
SSLCertificateFile /var/www/ssl/STAR_iconcierge_net_au.crt
SSLCertificateKeyFile /var/www/ssl/STAR_iconcierge_net_au.key
SSLCertificateChainFile /var/www/ssl/STAR_iconcierge_net_au.crt
</VirtualHost>
Notice how *:80 (http) enacts a rewrite to *:443 (https), which then enforces
SSL with the SSLEngine on directive.