change accessMode for oom

Change-Id: I156e5d688023d96954a106e6b6e81f7911f91e2b
Issue-ID: VFC-1523
Signed-off-by: yangyan <yangyanyj@chinamobile.com>
diff --git a/kubernetes/vfc/charts/vfc-catalog/values.yaml b/kubernetes/vfc/charts/vfc-catalog/values.yaml
index aea74c6..1a8808b 100644
--- a/kubernetes/vfc/charts/vfc-catalog/values.yaml
+++ b/kubernetes/vfc/charts/vfc-catalog/values.yaml
@@ -76,7 +76,7 @@
   ##   GKE, AWS & OpenStack)
   ##
   # storageClass: "-"
-  accessMode: ReadWriteMany
+  accessMode: ReadWriteOnce
   size: 2Gi
   mountPath: /dockerdata-nfs
   mountSubPath: vfc/catalog