[Storage] Fix Queue account SAS generation with latest service version (Azure#23982)

Author: jalauzon-msft

sdk/storage/azure-storage-queue/CHANGELOG.md

@@ -6,6 +6,9 @@
 - Added support for `max_messages` in `receive_messages()` to specify the maximum number of messages to receive from the queue.
 
 ### Other Changes
+- Updated SAS token generation to use the latest supported service version by default. Moving to the latest version
+also included a change to how account SAS is generated to reflect a change made to the service in SAS generation for
+service version 2020-12-06.
 - Updated documentation for `receive_messages()` to explain iterator behavior and life-cycle.
 - Added a sample to `queue_samples_message.py` (and async-equivalent) showcasing the use of `max_messages` in `receive_messages()`. 
 

sdk/storage/azure-storage-queue/azure/storage/queue/_shared/shared_access_signature.py

@@ -211,7 +211,9 @@ def get_value_to_append(query):
              get_value_to_append(QueryStringConstants.SIGNED_EXPIRY) +
              get_value_to_append(QueryStringConstants.SIGNED_IP) +
              get_value_to_append(QueryStringConstants.SIGNED_PROTOCOL) +
-             get_value_to_append(QueryStringConstants.SIGNED_VERSION))
+             get_value_to_append(QueryStringConstants.SIGNED_VERSION) +
+             '\n'   # Signed Encryption Scope - always empty for queue
+             )
 
         self._add_query(QueryStringConstants.SIGNED_SIGNATURE,
                         sign_string(account_key, string_to_sign))

sdk/storage/azure-storage-queue/tests/test_queue_api_version.py

@@ -10,7 +10,7 @@
     QueueServiceClient,
     QueueClient
 )
-from azure.storage.queue._serialize import _SUPPORTED_API_VERSIONS
+from azure.storage.queue._shared.constants import X_MS_VERSION
 from devtools_testutils.storage import StorageTestCase
 
 # ------------------------------------------------------------------------------
@@ -19,7 +19,7 @@ class StorageClientTest(StorageTestCase):
     def setUp(self):
         super(StorageClientTest, self).setUp()
         self.api_version_1 = "2019-02-02"
-        self.api_version_2 = _SUPPORTED_API_VERSIONS[-1]
+        self.api_version_2 = X_MS_VERSION
 
     # --Test Cases--------------------------------------------------------------
 

sdk/storage/azure-storage-queue/tests/test_queue_api_version_async.py

@@ -13,7 +13,7 @@
     QueueServiceClient,
     QueueClient
 )
-from azure.storage.queue._serialize import _SUPPORTED_API_VERSIONS
+from azure.storage.queue._shared.constants import X_MS_VERSION
 from devtools_testutils.storage.aio import AsyncStorageTestCase
 
 # ------------------------------------------------------------------------------
@@ -22,7 +22,7 @@ class StorageClientTest(AsyncStorageTestCase):
     def setUp(self):
         super(StorageClientTest, self).setUp()
         self.api_version_1 = "2019-02-02"
-        self.api_version_2 = _SUPPORTED_API_VERSIONS[-1]
+        self.api_version_2 = X_MS_VERSION
 
     # --Test Cases--------------------------------------------------------------