HADOOP-8059. Update CHANGES.txt to target 2.7.0.

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -68,9 +68,6 @@ Trunk (Unreleased)
     HADOOP-7659. fs -getmerge isn't guaranteed to work well over non-HDFS
     filesystems (harsh)
 
-    HADOOP-8059. Add javadoc to InterfaceAudience and InterfaceStability.
-    (Brandon Li via suresh)
-
     HADOOP-8434. Add tests for Configuration setter methods.
     (Madhukara Phatak via suresh)
 
@@ -694,6 +691,9 @@ Release 2.7.0 - UNRELEASED
 
     HADOOP-11714. Add more trace log4j messages to SpanReceiverHost (cmccabe)
 
+    HADOOP-8059. Add javadoc to InterfaceAudience and InterfaceStability.
+    (Brandon Li via suresh)
+
   OPTIMIZATIONS
 
     HADOOP-11323. WritableComparator#compare keeps reference to byte array.