api: Making id a required field in scalekubernetesclustercmd (#4404)

Author: davidjumani

plugins/integrations/kubernetes-service/src/main/java/org/apache/cloudstack/api/command/user/kubernetes/cluster/ScaleKubernetesClusterCmd.java

@@ -57,7 +57,7 @@ public class ScaleKubernetesClusterCmd extends BaseAsyncCmd {
     /////////////////////////////////////////////////////
     //////////////// API parameters /////////////////////
     /////////////////////////////////////////////////////
-    @Parameter(name = ApiConstants.ID, type = CommandType.UUID,
+    @Parameter(name = ApiConstants.ID, type = CommandType.UUID, required = true,
             entityType = KubernetesClusterResponse.class,
             description = "the ID of the Kubernetes cluster")
     private Long id;