clean up configmap example

Use the default name space so the example can be used without
modification.

Signed-off-by: Jens Freimann <jfreimann@redhat.com>

config/samples/configmap_payload.yaml

@@ -1,9 +1,8 @@
 kind: ConfigMap
 apiVersion: v1
 metadata:
-  creationTimestamp: 2016-02-18T19:14:38Z
   name: payload-config
-  namespace: kata-operator
+  namespace: kata-operator-system
 data:
   # change to your custom payload repository:tag value
   daemon.payload: quay.io/user/repository:test