loadbalancer: add comment for ordering

bug #336
Signed-off-by: Emilien Macchi <emilien.macchi@enovance.com>

manifests/loadbalancer.pp

@@ -59,6 +59,7 @@ class cloud::loadbalancer(
   $galera_ip                        = $os_params::galera_ip
 ){
 
+  # Ensure Keepalived is started before HAproxy to avoid binding errors.
   class { 'keepalived': } ->
   class { 'haproxy': }