Update csi-snapshotter images to v5.0.1

Author: chrishenzie

deploy/kubernetes-1.21-test/hostpath/csi-hostpath-snapshotter.yaml

@@ -37,9 +37,7 @@ spec:
       serviceAccountName: csi-snapshotter
       containers:
         - name: csi-snapshotter
-          # TODO GG: Replace w/ v5.0.0 once released
-          # https://github.com/kubernetes-csi/external-snapshotter/issues/610
-          image: gcr.io/k8s-staging-sig-storage/csi-snapshotter:v5.0.0-rc1
+          image: k8s.gcr.io/sig-storage/csi-snapshotter:v5.0.1
           args:
             - -v=5
             - --csi-address=/csi/csi.sock

deploy/kubernetes-1.21/hostpath/csi-hostpath-plugin.yaml

@@ -352,9 +352,7 @@ spec:
               name: socket-dir
 
         - name: csi-snapshotter
-          # TODO GG: Replace w/ v5.0.0 once released
-          # https://github.com/kubernetes-csi/external-snapshotter/issues/610
-          image: gcr.io/k8s-staging-sig-storage/csi-snapshotter:v5.0.0-rc1
+          image: k8s.gcr.io/sig-storage/csi-snapshotter:v5.0.1
           args:
             - -v=5
             - --csi-address=/csi/csi.sock