Revert "HADOOP-8143. Change distcp to have -pb on by default."

[steveloughran]

This reverts commit dd65eea.

Change-Id: I74180cf59d5bbad8c9f66cb331535addcbea863e

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 9s	Docker mode activated.
		_ Prechecks _
+1 💚	dupname	0m 0s	No case conflicting files found.
+1 💚	@author	0m 0s	The patch does not contain any @author tags.
+1 💚	test4tests	0m 0s	The patch appears to include 1 new or modified test files.
		_ trunk Compile Tests _
-1 ❌	mvninstall	22m 45s	root in trunk failed.
+1 💚	compile	0m 23s	trunk passed
+1 💚	checkstyle	0m 20s	trunk passed
+1 💚	mvnsite	0m 28s	trunk passed
-1 ❌	shadedclient	17m 4s	branch has errors when building and testing our client artifacts.
+1 💚	javadoc	0m 22s	trunk passed
+0 🆗	spotbugs	0m 41s	Used deprecated FindBugs config; considering switching to SpotBugs.
+1 💚	findbugs	0m 39s	trunk passed
		_ Patch Compile Tests _
+1 💚	mvninstall	0m 27s	the patch passed
+1 💚	compile	0m 18s	the patch passed
+1 💚	javac	0m 18s	the patch passed
+1 💚	checkstyle	0m 13s	the patch passed
+1 💚	mvnsite	0m 21s	the patch passed
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
-1 ❌	shadedclient	16m 0s	patch has errors when building and testing our client artifacts.
+1 💚	javadoc	0m 18s	the patch passed
+1 💚	findbugs	0m 44s	the patch passed
		_ Other Tests _
-1 ❌	unit	12m 51s	hadoop-distcp in the patch passed.
+1 💚	asflicense	0m 27s	The patch does not generate ASF License warnings.
		76m 26s

Reason	Tests
Failed junit tests	hadoop.tools.util.TestProducerConsumer

Subsystem	Report/Notes
Docker	ClientAPI=1.40 ServerAPI=1.40 base: https://builds.apache.org/job/hadoop-multibranch/job/PR-2023/1/artifact/out/Dockerfile
GITHUB PR	#2023
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient findbugs checkstyle
uname	Linux f0175f42e657 4.15.0-91-generic #92-Ubuntu SMP Fri Feb 28 11:09:48 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	personality/hadoop.sh
git revision	trunk / 017d24e
Default Java	Private Build-1.8.0_252-8u252-b09-1~18.04-b09
mvninstall	https://builds.apache.org/job/hadoop-multibranch/job/PR-2023/1/artifact/out/branch-mvninstall-root.txt
unit	https://builds.apache.org/job/hadoop-multibranch/job/PR-2023/1/artifact/out/patch-unit-hadoop-tools_hadoop-distcp.txt
Test Results	https://builds.apache.org/job/hadoop-multibranch/job/PR-2023/1/testReport/
Max. process+thread count	321 (vs. ulimit of 5500)
modules	C: hadoop-tools/hadoop-distcp U: hadoop-tools/hadoop-distcp
Console output	https://builds.apache.org/job/hadoop-multibranch/job/PR-2023/1/console
versions	git=2.17.1 maven=3.6.0 findbugs=3.1.0-RC1
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