HADOOP-9231. Add missing CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1437143 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -450,6 +450,9 @@ Release 2.0.3-alpha - Unreleased
     HADOOP-9216. CompressionCodecFactory#getCodecClasses should trim the
     result of parsing by Configuration. (Tsuyoshi Ozawa via todd)
 
+    HADOOP-9231. Parametrize staging URL for the uniformity of
+    distributionManagement. (Konstantin Boudnik via suresh)
+
   OPTIMIZATIONS
 
     HADOOP-8866. SampleQuantiles#query is O(N^2) instead of O(N). (Andrew Wang