Merge pull request #35503 from wojtek-t/fix_migration

Automatic merge from submit-queue

Fix migration script to make it sh-friendly

Ref #22448

There is no bash in etcd image, so the script needs to be "sh-friendly".

Also, few fixes to the script.

hack/test-update-storage-objects.sh

@@ -160,7 +160,7 @@ killApiServer
 
 kube::etcd::stop
 TARGET_STORAGE="etcd3" \
-  TARGET_VERSION="3.0.10" \
+  TARGET_VERSION="3.0.12" \
   DATA_DIRECTORY="${ETCD_DIR}" \
   ETCD=$(which etcd) \
   ETCDCTL=$(which etcdctl) \