tempurl middleware need to support both /v1 and /v1.0

tempurl:_get_account() only supports path with the following format.

/v1/account/container/object

See

https://github.com/openstack/swift/blob/master/swift/common/middleware/tempurl.py

line 285.

---
   if len(parts) == 5 and not parts[0] and parts[1] == 'v1' and \
                    parts[2] and parts[3] and parts[4].strip('/'):
                account = parts[2]
---

We need to make sure /v1.0 is also supported.