OCPBUGS-9217 Include caveats for load balancer services

Author: jmanthei

modules/nw-create-load-balancer-service.adoc

@@ -10,6 +10,10 @@ Use the following procedure to create a load balancer service.
 
 .Prerequisites
 
+[IMPORTANT]
+====
+Load balancer support depends on cloud service provider. Some are not capable of creating load balancers and will ignore this aspect of service resources.
+====
 * Make sure that the project and service you want to expose exist.
 
 .Procedure