stream resource name must be lower case (#2149)

pkg/cluster/streams.go

@@ -192,7 +192,7 @@ func (c *Cluster) generateFabricEventStream(appId string) *zalandov1.FabricEvent
 		},
 		ObjectMeta: metav1.ObjectMeta{
 			// max length for cluster name is 58 so we can only add 5 more characters / numbers
-			Name:        fmt.Sprintf("%s-%s", c.Name, util.RandomPassword(5)),
+			Name:        fmt.Sprintf("%s-%s", c.Name, strings.ToLower(util.RandomPassword(5))),
 			Namespace:   c.Namespace,
 			Labels:      c.labelsSet(true),
 			Annotations: c.AnnotationsToPropagate(c.annotationsSet(nil)),