use appGroupName as cluster rather than asgName

RUNNING.md

@@ -61,7 +61,7 @@
   
 ## Netflix Turbine
  
-  `spring-platform-netflix-turbine$ java -jar target/spring-platform-netflix-turbine-1.0.0.BUILD-SNAPSHOT.war --InstanceDiscovery.impl=io.spring.platform.netflix.turbine.EurekaInstanceDiscovery --turbine.appConfig=samplefrontendservice --turbine.aggregator.clusterConfig=sampleApps --turbine.instanceUrlSuffix=/hystrix.stream --turbine.instanceInsertPort=true`
+  `spring-platform-netflix-turbine$ java -jar target/spring-platform-netflix-turbine-1.0.0.BUILD-SNAPSHOT.war --InstanceDiscovery.impl=io.spring.platform.netflix.turbine.EurekaInstanceDiscovery --turbine.appConfig=samplefrontendservice --turbine.aggregator.clusterConfig=SAMPLEAPPS --turbine.instanceUrlSuffix=/hystrix.stream --turbine.instanceInsertPort=true`
   
 ## Sandbox Sample Backend
 

spring-platform-netflix-turbine/src/main/java/io/spring/platform/netflix/turbine/EurekaInstanceDiscovery.java

@@ -162,8 +162,9 @@ public class EurekaInstanceDiscovery implements InstanceDiscovery {
      * @return
      */
     protected String getClusterName(InstanceInfo iInfo) {
-        return iInfo.getASGName();
-        //TODO: why did this break things? return iInfo.getAppGroupName();
+        //TODO: make ASG configurable return iInfo.getASGName();
+        //AppGroupName is UPPERCASE from eureka
+        return iInfo.getAppGroupName();
     }
 
     /**