Move HADOOP-11581 in CHANGES.txt from 3.0.0 to 2.8.0.

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

@@ -424,9 +424,6 @@ Trunk (Unreleased)
     HADOOP-11559. Add links to RackAwareness and InterfaceClassification
     to site index (Masatake Iwasaki via aw)
 
-    HADOOP-11581. Multithreaded correctness Warnings
-    #org.apache.hadoop.fs.shell.Ls (Brahma Reddy Battula via aw)
-
     HADOOP-11580. Remove SingleNodeSetup.md from trunk (aajisaka)
 
     HADOOP-11583. Fix syntax error in SecureMode.md (Masatake Iwasaki via aw)
@@ -713,6 +710,9 @@ Release 2.8.0 - UNRELEASED
     HADOOP-10582. Fix the test case for copying to non-existent dir in
     TestFsShellCopy. (Kousuke Saruta via aajisaka)
 
+    HADOOP-11581. Multithreaded correctness Warnings
+    #org.apache.hadoop.fs.shell.Ls (Brahma Reddy Battula via aw)
+
 Release 2.7.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES