Remove provisioner versioning from efs,cephfs,nfs-client; use latest tag instead

(cherry picked from commit da48ed92e1)

README.md

@@ -1,9 +1,6 @@
 # kubernetes nfs-client-provisioner
 
 [![Docker Repository on Quay](https://quay.io/repository/external_storage/nfs-client-provisioner/status "Docker Repository on Quay")](https://quay.io/repository/external_storage/nfs-client-provisioner)
-```
-quay.io/external_storage/nfs-client-provisioner:v2.0.0
-```
 
 - pv provisioned as ${namespace}-${pvcName}-${pvName}
 - pv recycled as archieved-${namespace}-${pvcName}-${pvName}

deploy/deployment.yaml

@@ -13,7 +13,7 @@ spec:
     spec:
       containers:
         - name: nfs-client-provisioner
-          image: quay.io/external_storage/nfs-client-provisioner:v2.0.0
+          image: quay.io/external_storage/nfs-client-provisioner:latest
           volumeMounts:
             - name: nfs-client-root
               mountPath: /persistentvolumes