Docserver: Update app version parsing since AppEngine started including /

chrome/common/extensions/docs/server2/object_store_creator.py

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-from appengine_wrappers import GetAppVersion
 from cache_chain_object_store import CacheChainObjectStore
+from environment import GetAppVersion
 from memcache_object_store import MemcacheObjectStore
 from test_object_store import TestObjectStore
 from persistent_object_store import PersistentObjectStore
 
 _unspecified = object()
 
 class ObjectStoreCreator(object):
   '''Creates ObjectStores with a namespacing and behaviour configuration.
 
   The initial configuration is specified on object store construction. When
@@ skipping 54 matching lines @@
         if value is not None)
 
     if self._disable_wrappers:
       return self._store_type(namespace, start_empty=start_empty)
 
     if self._store_type is not None:
       chain = (self._store_type(namespace),)
     else:
       chain = (MemcacheObjectStore(namespace), PersistentObjectStore(namespace))
     return CacheChainObjectStore(chain, start_empty=start_empty)