add priority change per Support Engineer

azure-storage-blob/ChangeLog.md

@@ -7,6 +7,7 @@
 - Support for 2019-02-02 REST version. Please see our REST API documentation and blog for information about the related added features.
 - Added Batch Delete Blob API.
 - Added Batch Set Standard Blob Tier API(for BlockBlob).
+- Added support to set rehydrate blob priority for Set Standard Blob Tier API
 - Added Blob Tier support for PutBlob/PutBlockList/CopyBlob APIs.
 - Added support for client provided encryption key to numerous APIs.