Merge pull request #3143 from loganhz/eks

Set 1.13 as default Kubernetes version for EKS

lib/shared/addon/components/cluster-driver/driver-amazoneks/component.js

@@ -54,7 +54,7 @@ export default Component.extend(ClusterDriver, {
         instanceType:      'm4.large',
         minimumNodes:      1,
         maximumNodes:      3,
-        kubernetesVersion: '1.11'
+        kubernetesVersion: VERSIONS[VERSIONS.length - 1],
       });
 
       set(this, 'cluster.amazonElasticContainerServiceConfig', config);