update doc to add lease for ce (#1488)

Signed-off-by: rashmi_kh <[email protected]>

Author: rashmi43

config/samples/olm_v1_clusterextension.yaml

@@ -234,6 +234,9 @@ rules:
 - apiGroups: [""]
   resources: [configmaps]
   verbs: [create, list, watch]
+- apiGroups: [coordination.k8s.io]
+  resources: [leases]
+  verbs: [get, list, watch, create, update, patch, delete]
 - apiGroups: [""]
   resources: [configmaps]
   verbs: [get, update, patch, delete]