Update examples

single-cluster/kustomize/fleet.yaml

@@ -0,0 +1,11 @@
+# This file and all contents in it are OPTIONAL.
+
+# The default namespace to apply to resources that are namespaced
+# but do not specify a namespace.  In this example no resources
+# are configured with a namespace so this default will apply
+namespace: fleet-kustomize-example
+
+
+kustomize:
+  # To use a kustomization.yaml different from the one in the root folder
+  dir: ""