HDFS-7314. Moving to 2.6.1 CHANGES.txt section.

(cherry picked from commit f103a70af5c5b01931b5cd2e5782eac5aeeb31cd)

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -13,9 +13,6 @@ Release 2.7.2 - UNRELEASED
     HADOOP-5323. Trash documentation should describe its directory structure and
     configurations. (Weiwei Yang via ozawa)
 
-    HDFS-7314. When the DFSClient lease cannot be renewed, abort open-for-write
-    files rather than the entire DFSClient. (mingma)
-
   OPTIMIZATIONS
 
     HDFS-8722. Optimize datanode writes for small writes and flushes (kihwal)
@@ -1148,6 +1145,9 @@ Release 2.6.1 - 2015-09-09
     HDFS-7213. processIncrementalBlockReport performance degradation.
     (Eric Payne via kihwal)
 
+    HDFS-7314. When the DFSClient lease cannot be renewed, abort open-for-write
+    files rather than the entire DFSClient. (mingma)
+
     HDFS-7235. DataNode#transferBlock should report blocks that don't exist
     using reportBadBlock (yzhang via cmccabe)