HADOOP-16979 set auth mode to false by default for s3 ITs

[mukund-thakur]

Since it is a test only change, no new tests were added.
Ran all s3a integration tests in both auth/non-auth mode with ap-south-1. All good.

[hadoop-yetus]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 20s	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 14s	trunk passed
+1 💚	compile	0m 37s	trunk passed
+1 💚	checkstyle	0m 24s	trunk passed
+1 💚	mvnsite	0m 38s	trunk passed
+1 💚	shadedclient	16m 33s	branch has no errors when building and testing our client artifacts.
+1 💚	javadoc	0m 26s	trunk passed
+0 🆗	spotbugs	1m 6s	Used deprecated FindBugs config; considering switching to SpotBugs.
+1 💚	findbugs	1m 2s	trunk passed
		_ Patch Compile Tests _
+1 💚	mvninstall	0m 38s	the patch passed
+1 💚	compile	0m 29s	the patch passed
+1 💚	javac	0m 29s	the patch passed
+1 💚	checkstyle	0m 19s	the patch passed
+1 💚	mvnsite	0m 34s	the patch passed
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	shadedclient	15m 30s	patch has no errors when building and testing our client artifacts.
+1 💚	javadoc	0m 21s	the patch passed
+1 💚	findbugs	1m 1s	the patch passed
		_ Other Tests _
+1 💚	unit	1m 26s	hadoop-aws in the patch passed.
+1 💚	asflicense	0m 29s	The patch does not generate ASF License warnings.
		65m 10s

Subsystem	Report/Notes
Docker	Client=19.03.8 Server=19.03.8 base: https://builds.apache.org/job/hadoop-multibranch/job/PR-1958/1/artifact/out/Dockerfile
GITHUB PR	#1958
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient findbugs checkstyle
uname	Linux 66a1481b1014 4.15.0-74-generic #84-Ubuntu SMP Thu Dec 19 08:06:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	personality/hadoop.sh
git revision	trunk / 7b2d84d
Default Java	1.8.0_242
Test Results	https://builds.apache.org/job/hadoop-multibranch/job/PR-1958/1/testReport/
Max. process+thread count	334 (vs. ulimit of 5500)
modules	C: hadoop-tools/hadoop-aws U: hadoop-tools/hadoop-aws
Console output	https://builds.apache.org/job/hadoop-multibranch/job/PR-1958/1/console
versions	git=2.7.4 maven=3.3.9 findbugs=3.1.0-RC1
Powered by	Apache Yetus 0.11.1 https://yetus.apache.org

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[mukund-thakur]

@steveloughran @bgaborg Please check. Thanks

[bgaborg]

+1 LGTM

[mukund-thakur]

Thanks