HDFS-7172. Test data files may be checked out of git with incorrect line endings, causing test failures in TestHDFSCLI. Contributed by Chris Nauroth.

(cherry picked from commit 5db04a5a1a27d4199bfcc1c31a001ff4db32810b)

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

hadoop-hdfs-project/hadoop-hdfs/.gitattributes

@@ -0,0 +1 @@
+src/test/resources/data* text eol=lf

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

@@ -539,6 +539,9 @@ Release 2.6.0 - UNRELEASED
     HDFS-7176. The namenode usage message doesn't include "-rollingupgrade
     started" (cmccabe)
 
+    HDFS-7172. Test data files may be checked out of git with incorrect line
+    endings, causing test failures in TestHDFSCLI. (Chris Nauroth via wheat9)
+
     BREAKDOWN OF HDFS-6134 AND HADOOP-10150 SUBTASKS AND RELATED JIRAS
   
       HDFS-6387. HDFS CLI admin tool for creating & deleting an