Update Static Provisioning README.md to include information on mounttargetip option.

Author: seanzatzdev-amazon

examples/kubernetes/static_provisioning/README.md

@@ -48,3 +48,27 @@ Also you can verify that data is written onto EFS filesystem:
 ```sh
 >> kubectl exec -ti efs-app -- tail -f /data/out.txt
 ```
+
+
+**Note**
+
+In certain use cases, it may be useful to provide the EFS Mount Target IP Address when performing static provisioning. This can optionally be specified in the PersistentVolume object specification ```volumeAttributes``` section. This allows the CSI Driver to mount via IP address directly without additional communication with a DNS server. Example:
+```
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: efs-pv
+spec:
+  capacity:
+    storage: 5Gi
+  volumeMode: Filesystem
+  accessModes:
+    - ReadWriteOnce
+  storageClassName: efs-sc
+  persistentVolumeReclaimPolicy: Retain
+  csi:
+    driver: efs.csi.aws.com
+    volumeHandle:[FILESYSTEM ID]
+    volumeAttributes:
+      mounttargetip: "[MOUNT TARGET IP ADDRESS]"
+```