deploy: use "apply" instead of "create" for snapshotter class

This makes it possible to run the script repeatedly to update
a deployment. "kubectl apply" was already used for the other
.yaml files.

Author: pohly

deploy/util/deploy-hostpath.sh

@@ -164,4 +164,4 @@ done
 
 # deploy snapshotclass
 echo "deploying snapshotclass"
-kubectl create -f ${BASE_DIR}/snapshotter/csi-hostpath-snapshotclass.yaml
+kubectl apply -f ${BASE_DIR}/snapshotter/csi-hostpath-snapshotclass.yaml