Update external-provisioner in driver deployment

Author: avalluri

deploy/kubernetes-1.20/hostpath/csi-hostpath-provisioner.yaml

@@ -26,7 +26,7 @@ spec:
       serviceAccountName: csi-provisioner
       containers:
         - name: csi-provisioner
-          image: k8s.gcr.io/sig-storage/csi-provisioner:v2.1.0
+          image: k8s.gcr.io/sig-storage/csi-provisioner:v2.1.1
           args:
             - -v=5
             - --csi-address=/csi/csi.sock