cephfs driver deploy support remount volume

deploy/cephfs/kubernetes/csi-cephfsplugin.yaml

@@ -55,6 +55,7 @@ spec:
             - "--v=5"
             - "--drivername=cephfs.csi.ceph.com"
             - "--metadatastorage=k8s_configmap"
+            - "--mountcachedir=/mount-cache-dir"
           env:
             - name: NODE_ID
               valueFrom:
@@ -68,6 +69,8 @@ spec:
               value: unix:///csi/csi.sock
           imagePullPolicy: "IfNotPresent"
           volumeMounts:
+            - name: mount-cache-dir
+              mountPath: /mount-cache-dir
             - name: plugin-dir
               mountPath: /csi
             - name: csi-plugins-dir
@@ -84,6 +87,8 @@ spec:
             - name: host-dev
               mountPath: /dev
       volumes:
+        - name: mount-cache-dir
+          emptyDir: {}
         - name: plugin-dir
           hostPath:
             path: /var/lib/kubelet/plugins/cephfs.csi.ceph.com/