Move YARN-2918 from 2.8.0 to 2.7.1

(cherry picked from commit 03f897fd1a3779251023bae358207069b89addbf)

hadoop-yarn-project/CHANGES.txt

@@ -340,9 +340,6 @@ Release 2.8.0 - UNRELEASED
     YARN-3584. Fixed attempt diagnostics format shown on the UI. (nijel via
     jianhe)
 
-    YARN-2918. RM should not fail on startup if queue's configured labels do
-    not exist in cluster-node-labels. (Wangda Tan via jianhe)
-
     YARN-1832. Fix wrong MockLocalizerStatus#equals implementation.
     (Hong Zhiguo via aajisaka)
 
@@ -484,6 +481,9 @@ Release 2.7.1 - UNRELEASED
     YARN-3677. Fix findbugs warnings in yarn-server-resourcemanager.
     (Vinod Kumar Vavilapalli via ozawa)
 
+    YARN-2918. RM should not fail on startup if queue's configured labels do
+    not exist in cluster-node-labels. (Wangda Tan via jianhe)
+
 Release 2.7.0 - 2015-04-20
 
   INCOMPATIBLE CHANGES