HDFS-7328. TestTraceAdmin assumes Unix line endings. Contributed by Chris Nauroth.

(cherry picked from commit 2bb327eb939f57626d3dac10f7016ed634375d94)
(cherry picked from commit 5720cc9d2d4076ea67400ee337b0ad8cbad6cbe7)

Conflicts:
	hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/tracing/TestTraceAdmin.java